Document And Entity Information
us-gaap_IncreaseDecreaseInOtherOperatingLiabilities
Other current liabilities and accrued expenses
us-gaap_IncreaseDecreaseInOperatingLiabilities
Increase (Decrease) in Operating Liabilities
Note To Financial Statement Details Textual
Property, Plant and Equipment Disclosure [Text Block]
statementsignificantaccountingpoliciespolicies
statementnote3inventoriestables
Property, Plant and Equipment [Table Text Block]
statementnote4restructuringchargestables
Taxes on income
statementnote5goodwillandintangibleassetstables
Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block]
statementnote6propertyplantandequipmenttables
statementnote7leasestables
us-gaap_InterestExpenseDebt
Interest expense
Segment Reporting Disclosure [Text Block]
statementnote8taxesonincometables
us-gaap_IncreaseDecreaseInCustomerDeposits
Deposits from customers
Consolidation, Policy [Policy Text Block]
statementnote9transactionswithmajorcustomerstables
statementnote10commitmentsandcontingentliabilitiestables
statementnote12debttables
us-gaap_ValuationAllowancesAndReservesBalance
Balance at Beginning of Period
Balance at End of Period
statementnote13stockbasedcompensationtables
statementnote14shareholdersequitytables
Inventory Disclosure [Text Block]
statementnote15earningspersharetables
us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
Additions Charged to Other Accounts
Schedule of Inventory, Current [Table Text Block]
statementnote16businesssegmentstables
us-gaap_ValuationAllowancesAndReservesDeductions
Deductions
statementnote18quarterlyfinancialdataunauditedtables
statementscheduleiivaluationandqualifyingaccountstables
us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Additions Charged to Costs and Expenses
statementnote3inventoriessummaryofinventoriesdetails
statementnote4restructuringchargesrestructuringchargesincludedinconsolidatedstatementsofoperationsdetails
us-gaap_IntangibleAssetsGrossExcludingGoodwill
Gross carrying amount, intangible assets
statementnote5goodwillandintangibleassetsgoodwillbyreportablesegmentdetails
statementnote5goodwillandintangibleassetsimpairmentchargesgeneralandadministrativedetails
Warranty Reserves [Member]
statementnote5goodwillandintangibleassetsotherintangibleassetsdetails
statementnote5goodwillandintangibleassetsestimatedremainingamortizationassociatedwithfinitelivedintangibleassetsdetails
Inventory Valuation Reserve [Member]
statementnote6propertyplantandequipmentsummaryofpropertyplantandequipmentdetails
statementnote6propertyplantandequipmentimpairmentoflonglivedtangibleassetsdetails
statementnote7leasesfutureminimumoperatingleasecommitmentsundernoncancelableoperatingleasedetails
statementnote7leasesfutureminimumcapitalleasecommitmentsundernoncancelablecapitalleasesdetails
us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease
Changes in liability for pre-existing warranties during the period, including expirations
statementnote8taxesonincomeincometaxfromcontinuingoperationsdetails
us-gaap_ProductWarrantyAccrualPayments
Cash settlements made during the period
statementnote8taxesonincomeincometaxreconciliationdetails
statementnote8taxesonincomedeferredincometaxesdetails
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
Thereafter
statementnote8taxesonincomereconciliationofthechangeintheunrecognizedtaxbenefitsdetails
us-gaap_ProductWarrantyAccrualWarrantiesIssued
Warranties issued during the period
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
2020
statementnote9transactionswithmajorcustomersinformationaboutmajorcustomersdetails
Valuation Allowance of Deferred Tax Assets [Member]
statementnote10commitmentsandcontingentliabilitieschargesfornationalhighwaytrafficsafetyadministrationpolicydetails
us-gaap_IncreaseDecreaseInAccruedSalaries
Accrued compensation and related taxes
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
2021
us-gaap_PolicyTextBlockAbstract
Accounting Policies
statementnote10commitmentsandcontingentliabilitieschangeswarrantyliabilitydetails
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
2018
Valuation Allowances and Reserves [Domain]
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
2019
statementnote12debtscheduleoflongtermdebtdetails
statementnote12debtscheduleoflongtermdebtdetailsparentheticals
statementnote13stockbasedcompensationsarsactivitydetails
us-gaap_IncreaseDecreaseInAccountsPayable
Accounts payable
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
2017
Valuation Allowances and Reserves Type [Axis]
statementnote13stockbasedcompensationrestrictedstockactivitydetails
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
statementnote14stockholdersequitysummaryofstockrepurchasedandretireddetails
statementnote15earningspersharereconciliationofbasicweightedaveragecommonsharesoutstandingtodilutedweightedaveragesharesoutstandingdetails
us-gaap_SalariesAndWages
Compensation
statementnote16businesssegmentssegmentreportinginformationdetails
statementnote18quarterlyfinancialdataunauditedsummarizedquarterlyfinancialdatadetails
statementscheduleiivaluationandqualifyingaccountsscheduleiivaluationandqualifyingaccountsdetails
Notes To Financial Statements
Notes To Financial Statements [Abstract]
Operating expenses:
us-gaap_Revenues
Revenues
Schedule of Product Warranty Liability [Table Text Block]
Common stock, shares outstanding (in shares)
Schedule of Finite-Lived Intangible Assets [Table Text Block]
Cash and cash equivalents
Cash and cash equivalents at beginning of year
Cash and cash equivalents at end of year
Deferred income tax assets:
us-gaap_DeferredTaxAssetsValuationAllowance
Deferred Tax Assets, Valuation Allowance
Valuation allowance
us-gaap_AllocatedShareBasedCompensationExpense
Allocated Share-based Compensation Expense
Net deferred tax asset
us-gaap_DividendsCommonStock
Dividends declared ($0.10 per share)
Increase (decrease) in operating liabilities:
us-gaap_IncreaseDecreaseInOtherOperatingAssets
Other assets
us-gaap_IncreaseDecreaseInOperatingAssets
Increase (Decrease) in Operating Assets
us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net
us-gaap_DeferredIncomeTaxLiabilities
Total deferred income tax liabilities
us-gaap_DeferredTaxAssetsLiabilitiesNet
Deferred Tax Assets, Net
Net deferred tax asset
us-gaap_DeferredTaxAssetsGross
Total deferred tax assets
us-gaap_DeferredTaxAssetsOther
Other
Stock based compensation expense related to restricted stock
Allowance for Doubtful Accounts [Member]
Related Party Transactions Policy [Policy Text Block]
Disclosure of accounting policy for transactions with related parties including affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.
us-gaap_LettersOfCreditOutstandingAmount
Letters of Credit Outstanding, Amount
us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets
Other intangible assets
Deferred income tax liabilities:
us-gaap_DeferredTaxAssetsInventory
Inventory costs and reserves
spar_PaymentsForPreviousAcquisitionFinancingActivities
Payment of contingent consideration on acquisitions
Cash outflow representing an adjustment to the purchase price of a previous acquisition classified as financing activities.
spar_PaymentsForPreviousAcquisitionOperatingActivities
Payment of contingent consideration on acquisitions
Cash outflow representing an adjustment to the purchase price of a previous acquisition classified as operating activities.
Shares purchased (in shares)
Purchase and retirement of common stock (in shares)
Purchase value
Purchase and retirement of common stock
Sales
Sales revenue, net
us-gaap_IncreaseDecreaseInIncomeTaxesReceivable
Income taxes receivable
us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves
Warranty reserve
us-gaap_RevenueFromRelatedParties
Revenue from Related Parties
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable
us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits
Compensation related accruals
us-gaap_AccountsReceivableNet
Accounts receivable
us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Stock based compensation
us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
Stock Issued During Period, Shares, Employee Stock Purchase Plans
us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
Stock Issued During Period, Value, Employee Stock Purchase Plan
Credit carry-forwards, net of federal income tax benefit
Deferred Tax Assets, Tax Credit Carryforwards
Fair Value of Financial Instruments, Policy [Policy Text Block]
Issuance of restricted stock, net of cancellation (in shares)
spar_PercentageOfServiceRevenue
Percentage of Service Revenue
Represents the percentage of service revenue to total revenue.
Deposits from Customers [Policy Text Block]
The entire disclosure of the reporting entity's accounting policy regarding deposits from customers.
Net operating loss carry-forwards, net of federal income tax benefit
Issuance of restricted stock, net of cancellation
Segment Reporting, Policy [Policy Text Block]
Supplemental Disclosures of Cash Flow Policy [Policy Text Block]
The entire disclosure for supplemental disclosures of cash flow information policy.
spar_IncreaseInWaccBasisPoints
Increase in WACC Basis Points
Increase in WACC, basis points.
spar_FairValueExceedsCarryingValuePercentage
Fair Value Exceeds Carrying Value, Percentage
Fair value exceeds carrying value, percentage.
us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
Deferred Tax Assets, Operating Loss Carryforwards, State and Local
Accrual Of Severance [Member]
The accrual of severance for the cost of products sold.
Issuance of common stock and the tax impact of stock incentive plan transactions (in shares)
Acquired Product Development Project [Member]
Relocation Retention Costs [Member]
Relocation/retention costs related to the costs of products sold.
Business Combinations Policy [Policy Text Block]
Enterprise Resource Planning System [Member]
Issuance of common stock and the tax impact of stock incentive plan transactions
Earnings Per Share, Policy [Policy Text Block]
us-gaap_IncreaseDecreaseInInventories
Inventories
spar_NumberOfCustomersClassifiedAsMajorCustomers
Number of Customers Classified as Major Customers
The number of customers classified as major customers.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
Customer A [Member]
Income Tax, Policy [Policy Text Block]
Deferred income tax adjustment
Amount of adjustment to deferred income tax asset balance.
spar_IncreaseDecreaseInIncomeTaxesResultingFromAbstract
Increase (decrease) in income taxes resulting from:
Increase (decrease) in income taxes.
spar_IncomeTaxReconciliationDeferredIncomeTaxAdjustmentsPercent
Deferred income tax adjustment
Percent of adjustment to deferred income tax asset balance.
us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets
Deferred Tax Liabilities, Intangible Assets
Trade name
Research and Development Expense, Policy [Policy Text Block]
us-gaap_LiabilitiesAndStockholdersEquity
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY
spar_UnrecognizedTaxBenefitsIncludingIncomeTaxPenaltiesAndInterestAccrued
Unrecognized Tax Benefits Including Income Tax Penalties And Interest Accrued
Amount of unrecognized tax benefits, including amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.
Retained earnings
spar_DefinedContributionPlanCompanyMatchingContributionsVestingPeriod
Defined Contribution Plan Company Matching Contributions Vesting Period
Period which matching contributions are vested. In 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
Quarterly Bonus [Member]
Quarterly bonus.
Economic Value Add Plan [Member]
Entity's economic value plan.
Prudential Investment Management [Member]
Entity's line of credit source.
Annual Bonus [Member]
Annual bonus.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]
spar_DebtInstrumentReferenceRateTerm
Debt Instrument Reference Rate Term
The term of the reference rate related to a debt instrument.
spar_LineOfCreditFacilityPotentialIncreaseBorrowingCapacity
Line of Credit Facility, Potential Increase Borrowing Capacity
The potential increase in borrowing capacity under a credit facility.
Well Fargo Bank and JPMorgan Chase Bank [Member]
Credit facility for line of credit.
us-gaap_DeferredTaxLiabilitiesPrepaidExpenses
Prepaid insurance
us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Depreciation
Shipping and Handling Cost, Policy [Policy Text Block]
Authorized amount (in shares)
Stock Repurchase Program, Number of Shares Authorized to be Repurchased
Smeal Acquisition [Member]
A business acquisition consisting of Smeal Fire Apparatus Co. (“SFA”), Smeal Properties, Inc. (“Properties”), Ladder Tower Co. (“LTC”), and U.S. Tanker Co. (“UST”).
Decrease (increase) in operating assets:
us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense
spar_BusinessCombinationConsiderationTransferredForgivenessOfLiabilities
Business Combination, Consideration Transferred, Forgiveness of Liabilities
This element represents the disclosure of the amount of liabilities previously held by the acquirer that has been forgiven by the acquiree.
spar_ShareBasedCompensationExercisabilityPeriod
Share Based Compensation Exercisability Period
Share-based compensation, exercisability period.
spar_ExercisePriceToFairMarketValueOfStockPercentage
Exercise Price To Fair Market Value Of Stock Percentage
Exercise price to fair market value of stock, percentage.
spar_ShareBasedCompensationArrangementByShareBasedPaymentAwardSarsExercisesInPeriodTotalIntrinsicValue
Share Based Compensation Arrangement By Share Based Payment Award SARs Exercises In Period Total Intrinsic Value
Share-based compensation arrangement by share-based payment award, SARs, exercises in period, total intrinsic value.
spar_EmployeeStockPurchasePlanDiscount
Employee Stock Purchase Plan Discount
Represents information about employee stock purchase discount.
State
us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
State
Employee Stock Purchase Plan [Member]
Entity's employee stock purchase pan.
Federal
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Federal
Deferred (credit):
us-gaap_CurrentIncomeTaxExpenseBenefit
Total current
Current (credit):
Deferred income taxes
Total deferred
Stock based compensation related to stock awards
Other assets
Revenue Recognition, Policy [Policy Text Block]
Common stock, $0.01 par value; 40,000 shares authorized; 34,383 and 34,271 outstanding
us-gaap_TableTextBlock
Notes Tables
Standard Product Warranty, Policy [Policy Text Block]
Common stock, shares authorized (in shares)
Amendment Flag
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
Depreciation and amortization
Depreciation and amortization expense
Common stock, par value (in dollars per share)
us-gaap_Depreciation
Depreciation
Concentration Risk Disclosure [Text Block]
us-gaap_AssetsCurrent
Total current assets
Campaigns and Recalls [Member]
Expense from changes in fair value of contingent consideration
Goodwill and Intangible Assets, Policy [Policy Text Block]
us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges
Gain on disposal of assets
us-gaap_NonoperatingIncomeExpense
Total other income (expense)
spar_UnrecognizedTaxBenefitsIncludingIncomeTaxPenaltiesAndInterestAccruedCurrent
Unrecognized Tax Benefits Including Income Tax Penalties And Interest Accrued, Current
Amount of unrecognized tax benefits, including amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return classified as current.
Interest and other income
spar_UnrecognizedTaxBenefitsIncludingIncomeTaxPenaltiesAndInterestAccruedNoncurrent
Unrecognized Tax Benefits Including Income Tax Penalties And Interest Accrued, Noncurrent
Amount of unrecognized tax benefits, including amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return classified as noncurrent.
spar_IncreaseDecreaseInAccruedStandardProductWarrantyLiability
Cash paid for warranty repairs
The increase (decrease) during the reporting period of the obligations incurred through that date and payable for the standard product warranty liability for the period. Does not include increases or decreases in an extended warranty liability.
spar_ExcessTaxBenefitExpenseFromSharebasedCompensationOperatingActivities
Tax benefit related to stock incentive plan transactions
Amount of cash outflow (inflow) for realized tax benefit (expense) related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.
Type of Restructuring [Domain]
State and Local Jurisdiction [Member]
Preferred stock, no par value: 2,000 shares authorized (none issued)
Income Tax Authority [Domain]
Net cash used in the exercise, vesting or cancellation of stock incentive awards
The total cash inflow (outflow) associated with the amount received from holders to acquire the entity's shares under incentive and share awards, including stock option exercises. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.
Current Fiscal Year End Date
Domestic Tax Authority [Member]
Restructuring Type [Axis]
Restructuring and Related Activities Disclosure [Text Block]
Income taxes receivable
Income Tax Authority [Axis]
Preferred stock, shares issued (in shares)
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities
us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation
Statement of Financial Position [Abstract]
Preferred stock, shares authorized (in shares)
Document Fiscal Period Focus
Document Fiscal Year Focus
Preferred stock, par value (in dollars per share)
Document Period End Date
Document Type
Statement of Cash Flows [Abstract]
us-gaap_OperatingIncomeLoss
Operating income (loss)
Operating income (loss)
us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits
Balance at beginning of year
Balance at end of year
Other income (expense):
us-gaap_GrossProfit
Gross profit
Gross profit
Statement of Stockholders' Equity [Abstract]
Document Information [Line Items]
us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
Expiration of statute
Document Information [Table]
us-gaap_InterestPaid
Interest Paid
us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
Settlement
Entity Public Float
Inventory Impairment [Member]
Represents information pertaining to inventory impairment.
Entity Filer Category
us-gaap_PropertyPlantAndEquipmentUsefulLife
Property, Plant and Equipment, Useful Life
Production Relocation Costs [Member]
Represents information pertaining to production relocation costs.
Entity Current Reporting Status
us-gaap_OperatingLeasesFutureMinimumPaymentsDue
Total
us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
Decrease related to prior year tax positions
Manufacturing Process Reengineering [Member]
Represents manufacturing process re-engineering.
Entity Voluntary Filers
us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Increase related to current year tax positions
spar_TotalRestructuringCharges
Total restructuring
Total restructuring charges included in Statements of Operations.
Entity Well-known Seasoned Issuer
us-gaap_InventoryWriteDown
Inventory Write-down
Antidilutive stock awards:
Anti-dilutive stock awards [abstract]
us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter
Thereafter
us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Increase related to prior year tax positions
Restructuring charges
Restructuring charges, cost of products sold
us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
2020
Other current assets
us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
2021
Construction in Progress [Member]
us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
2018
us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
2019
Furniture and Fixtures [Member]
us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
2017
Non-controlling interest
Building and Building Improvements [Member]
Inventories
Total Inventory
Entity Central Index Key
us-gaap_InventoryRawMaterialsAndSupplies
Raw materials and purchased components
Entity Registrant Name
Land and Land Improvements [Member]
us-gaap_InventoryValuationReserves
Reserve for slow-moving inventory
us-gaap_InventoryWorkInProcess
Work in process
Entity [Domain]
Business Acquisition, Acquiree [Domain]
Legal Entity [Axis]
us-gaap_InventoryFinishedGoods
Finished goods
Business Acquisition [Axis]
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment, Type [Domain]
Property, Plant and Equipment, Policy [Policy Text Block]
Additional paid in capital
us-gaap_MinorityInterestOwnershipPercentageByParent
Noncontrolling Interest, Ownership Percentage by Parent
us-gaap_OtherInventoryDemo
Other Inventory, Demo, Gross
us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High
Shareholders' equity:
Entity Common Stock, Shares Outstanding (in shares)
Valuation Allowances and Reserves [Table Text Block]
Tabular disclosure of a schedule of allowance and reserve accounts where the valuation and qualifying accounts are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.
Inventory, Policy [Policy Text Block]
spar_DeferredtaxAssetsLiabilities
Net deferred income tax assets
Amount, net of deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards.
Cash flows from operating activities:
Statement [Line Items]
Trading Symbol
Accounts receivable, less allowance of $487 and $130
TOTAL
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Accounts receivable, allowance
us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Valuation allowance adjustment
us-gaap_Liabilities
Total liabilities
Commitments and contingencies
Accounting Standards Update 2015-17 [Member]
Current assets:
us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies
Unrecognized tax benefit adjustment, settlement and expiration of statute
us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Net increase (decrease) in cash and cash equivalents
Reclassified from Research and Development Expense to Cost of Products Sold [Member]
Represents the reclassification of prior period expenses from research and development expense to cost of products sold.
Other
us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsOther
us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued
us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther
Other nondeductible expenses
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash used in financing activities
us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
Non-deductible compensation
Type of Adoption [Domain]
us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
Cash paid related to tax impact of stock incentive plan transactions
Adjustments for New Accounting Pronouncements [Axis]
us-gaap_PaymentsOfDividends
Payment of dividends
us-gaap_ProductWarrantyAccrual
Balance of accrued warranty
Balance of accrued warranty
us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
Federal research and development tax credit
us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
State tax expense, net of federal income tax benefit
us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Federal income taxes at the statutory rate
us-gaap_IncomeTaxReconciliationOtherAdjustments
Other
Noncontrolling Interest [Member]
Valuation allowance adjustment
us-gaap_PaymentsForRepurchaseOfCommonStock
Purchase and retirement of common stock
us-gaap_StockholdersEquity
Total Spartan Motors, Inc. shareholders’ equity
Cost of products sold
Share-based Goods and Nonemployee Services Transaction, Supplier [Domain]
Supplier [Axis]
Retained Earnings [Member]
Cost of goods sold
Additional Paid-in Capital [Member]
Unrecognized tax benefit adjustment, settlement and expiration of statute
Common Stock [Member]
Equity Components [Axis]
Equity Component [Domain]
Report Date [Axis]
Financial Statement Filing Date [Domain]
us-gaap_CapitalLeaseObligations
Capital lease obligations (See Note 7 – Leases)
us-gaap_LitigationSettlementAmount
Litigation Settlement, Amount
Other nondeductible expenses
Smeal [Member]
Information pertaining to the entity, Smeal.
Subsidiaries of Patrick Industries [Member]
Information pertaining to the subsidiaries of Patrick Industries.
Non-deductible compensation
Accuride Distributing [Member]
Information pertaining to Accuride Distributing, a subsidiary of Accuride, Inc.
us-gaap_BusinessCombinationConsiderationTransferred1
Business Combination, Consideration Transferred
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms
Balance, non-vested shares outstanding, weighted average remaining vesting life (Year)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue
SARs outstanding and exercisable at December 31, 2016 (in dollars per share)
us-gaap_IncomeTaxReconciliationTaxCreditsResearch
Federal research and development tax credit
Trade and Other Accounts Receivable, Policy [Policy Text Block]
us-gaap_LineOfCredit
Long-term Line of Credit
Federal income taxes at the statutory rate
State tax expense, net of federal income tax benefit
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
Cancelled (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
SARs outstanding and exercisable (in dollars per share)
SARs outstanding and exercisable (in dollars per share)
Cash and Cash Equivalents, Policy [Policy Text Block]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
Exercised (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Balance, non-vested shares outstanding (in shares)
Balance, non-vested shares outstanding (in shares)
us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Total shareholders' equity
Balance
Balance
us-gaap_UnsecuredDebt
Principal due December 1, 2016 with quarterly interest only payments of $68 at 5.46%. Unsecured debt. (1)
Vehicles [Member]
Income Tax Disclosure [Text Block]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Forfeited (in shares)
Accounting Policies [Abstract]
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income (loss) before taxes
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Granted (in shares)
Wells Fargo, JPMorgan Chase Bank, N.A.and PNC Bank [Member]
The lender party consisting of the following: Wells Fargo, JPMorgan Chase Bank, N.A. and PNC Bank.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Vested (in shares)
Series B Senior Note [Member]
The bond classified as Series B that takes priority over other debt securities sold by the issuer.
us-gaap_RepaymentsOfLongTermDebt
Payments on long-term debt
Machinery and Equipment [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value
Selling, General and Administrative Expenses [Member]
Revolving Credit Facility [Member]
Credit Facility [Domain]
us-gaap_RepaymentsOfUnsecuredDebt
Repayments of Unsecured Debt
Credit Facility [Axis]
Proceeds from long-term debt
Long-term debt, less current portion
Total long-term debt
us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities
Total debt
Cost of Sales [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
SARs outstanding and exercisable (in shares)
SARs outstanding and exercisable (in shares)
Income Statement Location [Domain]
Income Statement Location [Axis]
Maximum [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures
Cancelled (in shares)
Minimum [Member]
Range [Axis]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised
Exercised (in shares)
Range [Domain]
Dividends declared (in dollars per share)
Customer [Axis]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted
Customer [Domain]
Trade Names [Member]
us-gaap_GoodwillGross
Acquired goodwill
us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Accumulated impairment
Indefinite-lived Intangible Assets, Major Class Name [Domain]
Schedule of Goodwill [Table Text Block]
Indefinite-lived Intangible Assets [Axis]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Goodwill and Intangible Assets Disclosure [Text Block]
us-gaap_RepaymentsOfLinesOfCredit
Payments on credit facilities
Non-deductible NHTSA penalty
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible National Highway Traffic Safety Administration (NHTSA) penalties.
Order or Production Backlog [Member]
spar_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseNhtsaPenaltyPercentage
Non-deductible NHTSA penalty
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible National Highway Traffic Safety Administration (NHTSA) penalties.
Noncompete Agreements [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized
Borrowings under credit facilities
Proceeds from Lines of Credit
spar_LimitedWarrantyCoverageAssemblyAndConstructionDefectsLowEnd
Limited Warranty Coverage, Assembly and Construction Defects, Low End
The lower end of limited warranty coverage for products containing defects due to assembly and construction.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Compensation and Employee Benefit Plans [Text Block]
Products and Services [Domain]
Deposits from customers
Products and Services [Axis]
Plan Name [Axis]
Plan Name [Domain]
Customer Relationships [Member]
us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Anti-dilutive stock awards (in shares)
Diluted weighted average common shares outstanding (in shares)
Diluted weighted average common shares outstanding (in shares)
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition
Customer Relationship [Member]
Represents the customer relationships established through general and administrative daily tansactions.
Office & Computer Equipment [Member]
Represents the office and computer equipment used for general and administrative purposes.
Award Type [Axis]
Geographical [Axis]
Equity Award [Domain]
Geographical [Domain]
Non-Patented Technology [Member]
Represents the non-patented T=technology assets used for general and administrative purposes.
us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
Related Party Transaction, Purchases from Related Party
Classic Fire Trade Name [Member]
Represents the classic fire trade name asset used for general and administrative purposes.
us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Diluted net earnings (loss) per share (in dollars per share)
Diluted net earnings (loss) per share (in dollars per share)
Machinery & Equipment [Member]
Represents the machinery and equipment assets used in business operations.
Scenario, Forecast [Member]
Scenario, Unspecified [Domain]
Basic weighted average common shares outstanding (in shares)
Basic weighted average common shares outstanding (in shares)
Adjustments for Error Correction [Domain]
Related Party [Domain]
Scenario [Axis]
Adjustments for Error Corrections [Axis]
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Related Party [Axis]
Basic net earnings (loss) per share (in dollars per share)
Basic net earnings (loss) per share (in dollars per share)
Related Party Transactions Disclosure [Text Block]
Other Segments [Member]
us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCosts
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Costs
Segments [Axis]
us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed
Segments [Domain]
Statement [Table]
Schedule of Loss Contingencies by Contingency [Table Text Block]
Commitments and Contingencies Disclosure [Text Block]
us-gaap_AccountsReceivableRelatedParties
Accounts Receivable, Related Parties
us-gaap_InterestCostsCapitalized
Interest Costs Capitalized
Less: net loss attributable to non-controlling interest
Other non-current liabilities
Income Statement [Abstract]
Cash flows from financing activities:
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
Business Combination Disclosure [Text Block]
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Unsecured Debt [Member]
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Domain]
Quarterly Financial Information [Table Text Block]
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Letter of Credit [Member]
Schedule of Impaired Intangible Assets [Table Text Block]
Line of Credit [Member]
us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter
Thereafter
us-gaap_CapitalLeasesFutureMinimumPaymentsDue
Total lease obligations, including imputed interest
us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Payments to Acquire Businesses, Net of Cash Acquired
us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears
2021
Net earnings (loss)
Net earnings (loss)
us-gaap_CashAcquiredFromAcquisition
Cash Acquired from Acquisition
us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears
2020
us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears
2019
us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears
2018
us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent
2017
Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation [Axis]
Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation [Domain]
us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments
Less imputed interest charges
Income tax expense (benefit)
TOTAL TAXES ON INCOME
TOTAL
Interim Period, Costs Not Allocable [Domain]
Nature of Expense [Axis]
us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments
Total outstanding capital lease obligations
us-gaap_LiabilitiesCurrent
Total current liabilities
Other current liabilities and accrued expenses
Year Ended December 31, 2015 [Member]
Represents the year ended December 31, 2015.
us-gaap_DebtInstrumentTerm
Debt Instrument, Term
Quarterly Financial Information [Text Block]
spar_IncreaseDecreaseInOtherAssets
Increase (Decrease) in Other Assets
The amount of increase (decrease) in assets classified as other.
spar_IncreaseDecreaseInCurrentAssets
Increase (Decrease) in Current Assets
The amount of increase (decrease) in current assets.
Reclassification from Deferred Tax Liabilities to Noncurrent Deferred Tax Assets [Member]
Represents the reclassification of deferred tax liabilities to noncurrent deferred tax assets.
Class of Stock [Axis]
Reclassification from Current Deferred Tax Assets to Noncurrent Deferred Tax Assets [Member]
Represents the reclassification of current deferred tax assets to noncurrent deferred tax assets.
Schedule of Weighted Average Number of Shares [Table Text Block]
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]
Leases of Lessee Disclosure [Text Block]
Aftermarket Parts and Accessories Sales [Member]
Represents sales related to aftermarket parts and accessories.
Current portion of long-term debt
Less current portion of long-term debt
us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Defined Contribution Plan, Employer Discretionary Contribution Amount
Interest only payments
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Debt Instrument, Basis Spread on Variable Rate
Schedule of Share-based Compensation, Stock Appreciation Rights Award Activity [Table Text Block]
Interest rate, percentage
us-gaap_OperatingExpenses
Total operating expenses
Accrued compensation and related taxes
Accounts payable
us-gaap_LeaseAndRentalExpense
Operating Leases, Rent Expense
Subsequent Event [Member]
Subsequent Event Type [Axis]
Subsequent Event Type [Domain]
Proceeds from sale of property, plant and equipment
us-gaap_IncomeTaxesPaidNet
Income Taxes Paid, Net
London Interbank Offered Rate (LIBOR) [Member]
Federal Funds Effective Swap Rate [Member]
Accrued warranty
Variable Rate [Axis]
Variable Rate [Domain]
Schedule of Long-term Debt Instruments [Table Text Block]
Cost Of Goods Sold [Member]
Primary financial statement caption encompassing cost of goods sold.
Business Description and Accounting Policies [Text Block]
GM [Member]
Chassis bailment inventory agreement with General Motors Company (GM).
Utilimaster [Member]
Business acquisition of Utilimaster in November of 2009.
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchases of property, plant and equipment
Capital expenditures
Schedule of Common Stock Repurchased and Retired [Table Text Block]
Tabular disclosure for all common stock repurchased and retired during the period.
Project [Axis]
Current liabilities:
Project [Domain]
Foreign Countries [Member]
Represents all other countries.
spar_PercentOfRevenueAttributedToForeignCountries
Percent of Revenue Attributed to Foreign Countries
Percent of revenue attributed to foreign countries.
us-gaap_Assets
Segment assets
TOTAL ASSETS
Impairment of assets
us-gaap_AssetImpairmentCharges
Asset Impairment
Emergency Response Vehicles [Member]
Information pertaining to the emergency response vehicles segment.
Delivery and Service Vehicles [Member]
The business segments related to delivery and service vehicles.
Specialty Chassis and Vehicles [Member]
Information pertaining to the specialty chassis and vehicles segment.
Utilmaster Vehicles [Member]
Information pertaining to the utilmaster vehicles segment.
Motorhome Chassis [Member]
Information pertaining to the motorhome chassis segment.
us-gaap_RestructuringCharges
Restructuring charges, general and admininstrative
Other Specialty Vehicles [Member]
Information pertaining to the other specialty vehicles segment.
General and Administrative
us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Effect of dilutive stock options (in shares)
us-gaap_GoodwillImpairmentLoss
Impairment losses during the year
us-gaap_SharesIssued
Balance (in shares)
Balance (in shares)
Impairment of assets
Stockholders' Equity Note Disclosure [Text Block]
us-gaap_InventoryRecallExpense
Inventory Recall Expense
us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Line of Credit Facility, Interest Rate at Period End
us-gaap_LineOfCreditFacilityCapacityAvailableForTradePurchases
Line of Credit Facility, Capacity Available for Trade Purchases
us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Line of Credit Facility, Current Borrowing Capacity
us-gaap_AmortizationOfIntangibleAssets
Amortization of Intangible Assets
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
Intangible assets, net
Net carrying amount, intangible assets
us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Accumulated amortization, finite-lived
us-gaap_FiniteLivedIntangibleAssetsNet
Net carrying amount, finite-lived
Total
us-gaap_FiniteLivedIntangibleAssetsGross
Gross carrying amount, finite-lived
us-gaap_NetIncomeLoss
Net earnings (loss) attributable to Spartan Motors, Inc.
Net earnings (loss) attributable to Spartan Motors, Inc.
Lender Name [Axis]
Line of Credit Facility, Lender [Domain]
us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
Gross carrying amount, indefinite-lived
Stock Appreciation Rights (SARs) [Member]
Goodwill
Goodwill, net
Goodwill, beginning of year
Goodwill, end of year
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Less accumulated depreciation
Restricted Stock [Member]
Property, plant and equipment, net
Total property, plant and equipment, net
Employee Stock Option [Member]
us-gaap_PropertyPlantAndEquipmentGross
Property, plant and equipment, gross
us-gaap_CapitalLeasedAssetsGross
Capital Leased Assets, Gross
Antidilutive Securities, Name [Domain]
us-gaap_ConstructionInProgressGross
Construction in Progress, Gross
Antidilutive Securities [Axis]
Debt Disclosure [Text Block]
Selling, general and administrative
Accruals for warranty
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
General and administrative
Use of Estimates, Policy [Policy Text Block]
New Accounting Pronouncements, Policy [Policy Text Block]
Earnings Per Share [Text Block]
Reclassification, Policy [Policy Text Block]
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
Impaired Long-Lived Assets Held and Used, Asset Name [Domain]
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash provided by operating activities
us-gaap_PriorPeriodReclassificationAdjustment
Prior Period Reclassification Adjustment
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Cash flows from investing activities:
Research and development
Impaired Long-Lived Assets Held and Used by Type [Axis]
us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities
Total adjustments
Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block]