$FSTR
FOSTER L B CO Stock $fstr

$fstr Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000035282519000012 Filed on March 18, 2019

Income Statement

Concept	2018 Q4	2017 Q4	2017 Q3
Revenue	$164.5M	$141.3M	$131.5M
YoY Change	16.42%	32.62%	14.7%
Cost Of Revenue	$91.70M	$111.4M	$103.6M
YoY Change	-17.68%	26.88%	9.21%
Gross Profit	$30.60M	$28.18M	$27.92M
YoY Change	8.61%	50.03%	40.97%
Gross Profit Margin	18.6%	19.94%	21.23%
Selling, General & Admin	$17.30M	$20.50M	$20.22M
YoY Change	-15.61%	2.5%	2.08%
% of Gross Profit	56.53%	72.76%	72.42%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$4.590M	$4.910M	$3.178M
YoY Change	-6.52%	-2.96%	-3.55%
% of Gross Profit	15.0%	17.43%	11.38%
Operating Expenses	$61.50M	$22.50M	$20.22M
YoY Change	173.33%	9.76%	2.08%
Operating Profit	-$30.90M	$5.675M	$9.118M
YoY Change	-644.48%	-429.75%	-219.08%
Interest Expense	-$1.300M	-$1.900M	$2.026M
YoY Change	-31.58%	-24.0%	33.29%
% of Operating Profit		-33.48%	22.22%
Other Income/Expense, Net			$551.0K
YoY Change			-49.22%
Pretax Income	-$35.80M	$5.500M	$4.566M
YoY Change	-750.91%	-230.95%	-148.78%
Income Tax	$4.700M	$2.200M	$66.00K
% Of Pretax Income		40.0%	1.45%
Net Earnings	-$41.15M	$78.00K	$4.500M
YoY Change	-52858.97%	-100.19%	-175.23%
Net Earnings / Revenue	-25.01%	0.06%	3.42%
Basic Earnings Per Share	-$3.97	$0.01	$0.44
Diluted Earnings Per Share	-$3.97	$0.01	$0.43
COMMON SHARES
Basic Shares Outstanding	10.56M shares	10.34M shares	10.34M shares
Diluted Shares Outstanding			10.48M shares

Balance Sheet

Concept	2018 Q4	2017 Q4	2017 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$10.30M	$37.70M	$35.00M
YoY Change	-72.68%	24.01%	845.95%
Cash & Equivalents	$10.28M	$37.68M	$35.01M
Short-Term Investments
Other Short-Term Assets	$5.763M	$9.120M	$9.986M
YoY Change	-36.81%	75.38%	-26.57%
Inventory	$124.5M	$102.7M	$104.0M
Prepaid Expenses
Receivables	$82.30M	$72.36M	$79.30M
Other Receivables	$0.00	$4.219M	$0.00
Total Short-Term Assets	$226.7M	$226.3M	$229.4M
YoY Change	0.17%	13.37%	32.22%
LONG-TERM ASSETS
Property, Plant & Equipment	$86.86M	$96.10M	$98.54M
YoY Change	-9.61%	-7.58%	-7.13%
Goodwill	$19.26M	$19.79M	$19.70M
YoY Change	-2.66%	4.51%
Intangibles
YoY Change
Long-Term Investments		$162.0K	$151.0K
YoY Change		-95.98%	-96.57%
Other Assets	$626.0K	$2.124M	$2.242M
YoY Change	-70.53%	-28.34%	-94.66%
Total Long-Term Assets	$156.6M	$175.4M	$179.8M
YoY Change	-10.75%	-9.29%	-24.41%
TOTAL ASSETS
Total Short-Term Assets	$226.7M	$226.3M	$229.4M
Total Long-Term Assets	$156.6M	$175.4M	$179.8M
Total Assets	$383.2M	$401.7M	$409.2M
YoY Change	-4.6%	2.22%	-0.52%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$78.27M	$52.40M	$59.83M
YoY Change	49.36%	38.84%	44.85%
Accrued Expenses	$13.62M	$9.764M	$8.452M
YoY Change	39.53%	9.06%	-69.81%
Deferred Revenue	$6.619M	$1.420M
YoY Change	366.13%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$600.0K	$700.0K	$9.900M
YoY Change	-14.29%	-93.27%	661.54%
Total Short-Term Liabilities	$124.2M	$93.53M	$109.2M
YoY Change	32.78%	13.6%	39.96%
LONG-TERM LIABILITIES
Long-Term Debt	$74.40M	$129.3M	$128.4M
YoY Change	-42.46%	-13.34%	-4.39%
Other Long-Term Liabilities	$17.30M	$17.49M	$16.73M
YoY Change	-1.11%	3.56%	10.09%
Total Long-Term Liabilities	$17.30M	$17.49M	$16.73M
YoY Change	-1.11%	3.56%	-88.81%
TOTAL LIABILITIES
Total Short-Term Liabilities	$124.2M	$93.53M	$109.2M
Total Long-Term Liabilities	$17.30M	$17.49M	$16.73M
Total Liabilities	$141.5M	$111.0M	$125.9M
YoY Change	27.44%	11.89%	-46.31%
SHAREHOLDERS EQUITY
Retained Earnings	$114.3M	$145.8M	$137.5M
YoY Change	-21.59%	9.07%
Common Stock	$111.0K	$111.0K	$111.0K
YoY Change	0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$18.17M	$18.66M	$18.66M
YoY Change	-2.66%	-3.49%
Treasury Stock Shares	749.8K shares	775.2K shares	775.2K shares
Shareholders Equity	$122.1M	$154.5M	$143.8M
YoY Change
Total Liabilities & Shareholders Equity	$383.2M	$401.7M	$409.2M
YoY Change	-4.6%	2.22%	-0.52%

Cashflow Statement

Concept	2018 Q4	2017 Q4	2017 Q3
OPERATING ACTIVITIES
Net Income	-$41.15M	$78.00K	$4.500M
YoY Change	-52858.97%	-100.19%	-175.23%
Depreciation, Depletion And Amortization	$4.590M	$4.910M	$3.178M
YoY Change	-6.52%	-2.96%	-3.55%
Cash From Operating Activities	$3.530M	$11.85M	-$2.400M
YoY Change	-70.21%	81.47%	-145.11%
INVESTING ACTIVITIES
Capital Expenditures	-$2.050M	-$810.0K	-$740.0K
YoY Change	153.09%	-29.57%	-48.61%
Acquisitions
YoY Change
Other Investing Activities	$120.0K	$70.00K	$1.250M
YoY Change	71.43%	-112.5%	1150.0%
Cash From Investing Activities	-$1.930M	-$740.0K	$500.0K
YoY Change	160.81%	-56.73%	-137.31%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-1.490M	-8.320M	300.0K
YoY Change	-82.09%	-136.25%	-100.9%
NET CHANGE
Cash From Operating Activities	3.530M	11.85M	-2.400M
Cash From Investing Activities	-1.930M	-740.0K	500.0K
Cash From Financing Activities	-1.490M	-8.320M	300.0K
Net Change In Cash	110.0K	2.790M	-1.600M
YoY Change	-96.06%	-89.95%	-94.51%
FREE CASH FLOW
Cash From Operating Activities	$3.530M	$11.85M	-$2.400M
Capital Expenditures	-$2.050M	-$810.0K	-$740.0K
Free Cash Flow	$5.580M	$12.66M	-$1.660M
YoY Change	-55.92%	64.84%	-124.56%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Amendment Flag AmendmentFlag	false
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-12-31
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
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CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Entity Registrant Name EntityRegistrantName	FOSTER L B CO
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0000352825
CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2019Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	10581281	shares
CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2018	dei	Trading Symbol TradingSymbol	fstr
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CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	20000000	shares
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CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	11115779	shares
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	10282000	USD
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	10340576	shares
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	749772	shares
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CY2018	us-gaap	Increase Decrease In Prepaid Taxes IncreaseDecreaseInPrepaidTaxes	249000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Taxes IncreaseDecreaseInPrepaidTaxes	-13978000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-1319000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-959000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	24210000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	14600000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-3491000	USD
CY2017	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	2440000	USD
CY2018	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	1233000	USD
CY2017	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	4260000	USD
CY2018	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	4046000	USD
CY2017	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2017	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-588000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-770000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	1559000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	25964000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	39372000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2389000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1462000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5251000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6149000	USD
CY2018	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	3875000	USD
CY2017	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2018	fstr	Proceeds From Equity Method Investment Repayment Of Line Of Credit ProceedsFromEquityMethodInvestmentRepaymentOfLineOfCredit	1235000	USD
CY2017	fstr	Proceeds From Equity Method Investment Repayment Of Line Of Credit ProceedsFromEquityMethodInvestmentRepaymentOfLineOfCredit	0	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	2248000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4687000	USD
CY2018	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	195254000	USD
CY2017	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	182718000	USD
CY2018	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	140270000	USD
CY2017	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	153118000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	316000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	103000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-55300000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-29703000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-308000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	2333000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-27396000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	7315000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	37678000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	30363000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	10282000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	37678000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	5577000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	7589000	USD
CY2016	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	1072000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	4512000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-11189000	USD
CY2017Q1	us-gaap	Stockholders Equity StockholdersEquity	140020000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	5361000	USD
CY2016	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	6024000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	426000	USD
CY2016	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	-103000	USD
CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1696000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	154496000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-31168000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-472000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-4405000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	453000	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	-316000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3836000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	122119000	USD
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2017	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2017	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2018Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	2057000	USD
CY2017Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	8682000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	483000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-804000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	2646000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	2241000	USD
CY2018	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	38913000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	28601000	USD
CY2018	us-gaap	Interest Expense InterestExpense	6154000	USD
CY2017	us-gaap	Interest Expense InterestExpense	8070000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	461000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	373000	USD
CY2018	us-gaap	Inventory Lifo Reserve Period Charge InventoryLIFOReservePeriodCharge	43400000	USD
CY2017	us-gaap	Inventory Lifo Reserve Period Charge InventoryLIFOReservePeriodCharge	0	USD
CY2018	fstr	Corporate Expense And Other Unallocated Charges CorporateExpenseAndOtherUnallocatedCharges	16531000	USD
CY2017	fstr	Corporate Expense And Other Unallocated Charges CorporateExpenseAndOtherUnallocatedCharges	10853000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-26711000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10051000	USD
CY2018Q4	us-gaap	Assets Assets	383249000	USD
CY2017Q4	us-gaap	Assets Assets	401743000	USD
CY2018	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	18593000	USD
CY2017	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	19841000	USD
CY2018	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	5251000	USD
CY2017	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	6149000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	626969000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	536377000	USD
CY2018Q4	us-gaap	Noncurrent Assets NoncurrentAssets	86857000	USD
CY2017Q4	us-gaap	Noncurrent Assets NoncurrentAssets	96096000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	626969000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	536377000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	26692000	USD
CY2017Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	25320000	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1505000	USD
CY2017Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1420000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	626969000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	536377000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	626969000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	536377000	USD
CY2018	us-gaap	Contract With Customer Asset Reclassified To Receivable ContractWithCustomerAssetReclassifiedToReceivable	18941000	USD
CY2018	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	1141000	USD
CY2018	fstr	Contractwith Customer Liability Increasefrom Cash Receipts ContractwithCustomerLiabilityIncreasefromCashReceipts	1447000	USD
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	220418000	USD
CY2018Q4	fstr	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.067
CY2017Q4	us-gaap	Goodwill Goodwill	19785000	USD
CY2018	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-527000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	19258000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	82980000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	33144000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	49836000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	88181000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	30741000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	57440000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	7098000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6992000	USD
CY2018Q4	fstr	Fully Amortized Intangible Asset FullyAmortizedIntangibleAsset	2830000	USD
CY2017Q4	fstr	Fully Amortized Intangible Asset FullyAmortizedIntangibleAsset	1560000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	6606000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	5860000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	5831000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	5741000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	5226000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	20572000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	49836000	USD
CY2018Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	87055000	USD
CY2017Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	78733000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	932000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2151000	USD
CY2018Q4	us-gaap	Accounts Notes And Loans Receivable Net Current AccountsNotesAndLoansReceivableNetCurrent	86123000	USD
CY2017Q4	us-gaap	Accounts Notes And Loans Receivable Net Current AccountsNotesAndLoansReceivableNetCurrent	76582000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-1443000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	846000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	82299000	USD
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	72363000	USD
CY2018Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	69041000	USD
CY2017Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	55846000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	26692000	USD
CY2017Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	25320000	USD
CY2018Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	6940000	USD
CY2017Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	4059000	USD
CY2018Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	21831000	USD
CY2017Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	17505000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	124504000	USD
CY2017Q4	us-gaap	Inventory Net InventoryNet	102730000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	124504000	USD
CY2017Q4	us-gaap	Inventory Net InventoryNet	102730000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	13624000	USD
CY2017Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	9764000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	5287000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	6914000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	114324000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	145797000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	509810000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	431116000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-26711000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10051000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4457000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4690000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-31168000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	5361000	USD
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.01
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.01
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-31168000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	5361000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-4424000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	7522000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-35592000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	12883000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-31168000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	5361000	USD
CY2018	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	1598000	USD
CY2017	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	1222000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	23403000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	14657000	USD
CY2018	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	4046000	USD
CY2017	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-588000	USD
CY2018Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	100262000	USD
CY2018Q2	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	139827000	USD
CY2018Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	135791000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-1333000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	6162000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	6426000	USD
CY2018Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	525000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	728000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	-1858000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	5434000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	6408000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.18
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.62
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.18
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.61
CY2017Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	97461000	USD
CY2017Q2	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	116932000	USD
CY2017Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	103575000	USD
CY2017Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-2002000	USD
CY2017Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3691000	USD
CY2017Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	4566000	USD
CY2017Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	431000	USD
CY2017Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	475000	USD
CY2017Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	66000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	-2433000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	3216000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	4500000	USD
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.24
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.31
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.44
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.24
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.31
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.43
CY2018	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	11445	shares
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	188655000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	189076000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	-101798000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	92980000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	86857000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	96096000	USD
CY2018	us-gaap	Depreciation Depreciation	11495000	USD
CY2017	us-gaap	Depreciation Depreciation	12849000	USD
CY2017	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	7277	shares
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Receivable Current CapitalLeasesFutureMinimumPaymentsReceivableCurrent	567000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Receivable CapitalLeasesFutureMinimumPaymentsReceivable	567000	USD
CY2018Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	6619000	USD
CY2017Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	10136000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1505000	USD
CY2017Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1420000	USD
CY2018Q4	us-gaap	Line Of Credit LineOfCredit	74008000	USD
CY2017Q4	us-gaap	Line Of Credit LineOfCredit	128470000	USD
CY2018Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	974000	USD
CY2017Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	1496000	USD
CY2018Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	74982000	USD
CY2017Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	129966000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	629000	USD
CY2017Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	656000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	74353000	USD
CY2017Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	129310000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	629000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	74334000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	19000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	0	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	0	USD
CY2018Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	74982000	USD
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	20000000	shares
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	20000000	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	11115779	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	11115779	shares
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017Q4	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2018Q4	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2018	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	316000	USD
CY2017	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	103000	USD
CY2017	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
CY2018	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-31168000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	5361000	USD
CY2018	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	10362000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	10334000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	10362000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	10334000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	0	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	149000	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	149000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	10362000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	10483000	shares
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.01
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.01
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	117000	shares
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-34608000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	4081000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	7897000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	5970000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-26711000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10051000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2208000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2630000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	172000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	822000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	3675000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2460000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	6055000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	5912000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-55000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-798000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-8000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	17000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1535000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-441000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1598000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1222000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4457000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4690000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-5609000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	3518000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	156000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.006
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-641000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.064
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-706000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.026
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	368000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.037
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	261000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	-0.010
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	323000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	0.032
CY2018	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0
CY2017	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	405000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.040
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	9573000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.952
CY2018	fstr	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Actof2017 Transition Tax On Accumulated Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActof2017TransitionTaxOnAccumulatedForeignEarningsAmount	0	USD
CY2018	fstr	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Actof2017 Transition Tax On Accumulated Foreign Earnings Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActof2017TransitionTaxOnAccumulatedForeignEarningsPercent	0
CY2017	fstr	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Actof2017 Transition Tax On Accumulated Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActof2017TransitionTaxOnAccumulatedForeignEarningsAmount	4009000	USD
CY2017	fstr	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Actof2017 Transition Tax On Accumulated Foreign Earnings Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActof2017TransitionTaxOnAccumulatedForeignEarningsPercent	0.399
CY2018	fstr	Effective Income Tax Rate Reconciliation Global Intangible Low Taxed Income EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncome	171000	USD
CY2018	fstr	Effective Income Tax Rate Reconciliation Global Intangible Low Taxed Income Percent EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomePercent	-0.006
CY2017	fstr	Effective Income Tax Rate Reconciliation Global Intangible Low Taxed Income EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncome	0	USD
CY2017	fstr	Effective Income Tax Rate Reconciliation Global Intangible Low Taxed Income Percent EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomePercent	0
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	633000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.024
CY2017	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	123000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.012
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	351000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.013
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	0	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0
CY2018	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	149000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	-0.006
CY2017	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	-6712000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	-0.668
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	10226000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.383
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-5354000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.533
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	91000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.003
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	134000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.013
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4457000	USD
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.167
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4690000	USD
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.467
CY2018Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	18756000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	19324000	USD
CY2018Q4	fstr	Deferred Tax Assets Accrued Settlement DeferredTaxAssetsAccruedSettlement	11933000	USD
CY2017Q4	fstr	Deferred Tax Assets Accrued Settlement DeferredTaxAssetsAccruedSettlement	0	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	1524000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	1532000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	346000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	2060000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	2940000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	2385000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Contingencies DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies	1663000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Contingencies DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies	1669000	USD
CY2018Q4	fstr	Deferred Tax Assets Operating Loss And Tax Credit Carryforwards DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards	1602000	USD
CY2017Q4	fstr	Deferred Tax Assets Operating Loss And Tax Credit Carryforwards DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards	1816000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	8915000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	10675000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	5020000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	858000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1442000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	39622000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	30228000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	30707000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	19553000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	5721000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	6625000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	7079000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	160000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	1220000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Inventory Costs DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts	2125000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Inventory Costs DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts	3056000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	272000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	513000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	14202000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	17589000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	5287000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6914000	USD
CY2018	fstr	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit	-12000	USD
CY2018	fstr	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Transition Tax For Accumulated Foreign Earnings Provisional Income Tax Expense TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpense	3225000	USD
CY2018Q4	fstr	Tax Cutsand Jobs Actof2017 Incomplete Accounting Provisional Undistributed Accumulated Earningsof Foreign Subsidiary TaxCutsandJobsActof2017IncompleteAccountingProvisionalUndistributedAccumulatedEarningsofForeignSubsidiary	65680000	USD
CY2018	us-gaap	Foreign Earnings Repatriated ForeignEarningsRepatriated	3200000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	160000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	30707000	USD
CY2018Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	612000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	599000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	28.88
CY2017	fstr	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Adjustment For Incentive Awards Expected To Vest Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentForIncentiveAwardsExpectedToVestWeightedAverageGrantDateFairValue	19.00
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	481000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	398000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	619000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	118000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	20000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	481000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	599000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	500000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	3836000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	1696000	USD
CY2018Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	5347000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P3Y3M18D
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	21.66
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	14.46
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	15.40
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	16.53
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	27.05
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	28.07
CY2018	fstr	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Adjustment For Incentive Awards Expected To Vest Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentForIncentiveAwardsExpectedToVestWeightedAverageGrantDateFairValue	26.93
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	16.38
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	18.61
CY2018Q4	us-gaap	Defined Benefit Plan Expected Amortization Next Fiscal Year DefinedBenefitPlanExpectedAmortizationNextFiscalYear	-125000	USD
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	4825000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	5278000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	3226000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	325000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	666000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	2894000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	19000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	1960000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	0	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	1585000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	0	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	1277000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	0	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	4302000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	1010000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	461000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	15244000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	36000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	974000	USD
CY2018Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	3274000	USD
CY2017Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	3164000	USD
CY2018Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	1503000	USD
CY2017Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	1066000	USD
CY2018Q4	us-gaap	Capital Leases Balance Sheet Assets By Major Class Net CapitalLeasesBalanceSheetAssetsByMajorClassNet	1771000	USD
CY2017Q4	us-gaap	Capital Leases Balance Sheet Assets By Major Class Net CapitalLeasesBalanceSheetAssetsByMajorClassNet	2098000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	16000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	17000	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	675000	USD
CY2017Q4	us-gaap	Derivative Assets DerivativeAssets	222000	USD
CY2018Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	691000	USD
CY2017Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	239000	USD
CY2017Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	8682000	USD
CY2018	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	1668000	USD
CY2018	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	1693000	USD
CY2018	fstr	Standard Product Warranty Accrual Reclassification StandardProductWarrantyAccrualReclassification	6600000	USD
CY2018Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	2057000	USD
	fstr	Concrete Ties Manufactured ConcreteTiesManufactured	3000000.0	tie
CY2018Q4	fstr	Accrued Legal Settlement Current AccruedLegalSettlementCurrent	10000000	USD
CY2018Q4	fstr	Accrued Legal Settlement Non Current AccruedLegalSettlementNonCurrent	40000000	USD
CY2018Q4	fstr	Present Value Of Proposed Remedial Work PresentValueOfProposedRemedialWork	1100000000	USD
CY2018Q4	fstr	Undiscovered Remedial Work UndiscoveredRemedialWork	1700000000	USD
CY2017Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	6144000	USD
CY2018	us-gaap	Accrual For Environmental Loss Contingencies Charges To Expense For New Losses AccrualForEnvironmentalLossContingenciesChargesToExpenseForNewLosses	125000	USD
CY2018	us-gaap	Accrual For Environmental Loss Contingencies Payments1 AccrualForEnvironmentalLossContingenciesPayments1	141000	USD
CY2018Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	6128000	USD
CY2018	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	508000	USD
CY2017	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	190000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	373000	USD
CY2018Q1	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	122454000	USD
CY2018Q2	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	172890000	USD
CY2018Q3	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	167094000	USD
CY2018Q4	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	164531000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	22192000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	33063000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	31303000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	30601000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	-1858000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	5434000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	6408000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	-41152000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.18
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	3216000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	4500000	USD
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.62
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.97
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.18
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.61
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.97
CY2017Q1	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	118702000	USD
CY2017Q2	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	144860000	USD
CY2017Q3	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	131492000	USD
CY2017Q4	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	141323000	USD
CY2017Q1	us-gaap	Gross Profit GrossProfit	21241000	USD
CY2017Q2	us-gaap	Gross Profit GrossProfit	27928000	USD
CY2017Q3	us-gaap	Gross Profit GrossProfit	27917000	USD
CY2017Q4	us-gaap	Gross Profit GrossProfit	28175000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	-2433000	USD
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.31
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.43
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	78000	USD
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.24
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.31
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.44
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.01
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.24
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.01

Files In Submission

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$FSTR
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2018 Q4 Form 10-K Financial Statement

#000035282519000012 Filed on March 18, 2019

Income Statement

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Facts In Submission

Files In Submission

$FSTR FOSTER L B CO Stock $fstr

2018 Q4 Form 10-K Financial Statement

#000035282519000012 Filed on March 18, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FSTR
FOSTER L B CO Stock $fstr