$ROCK
GIBRALTAR INDUSTRIES, INC. Stock $rock

$rock Overview Financials Valuation SEC Filings Company Website

2016 Q4 Form 10-K Financial Statement

#000091256218000006 Filed on February 27, 2018

Income Statement

Concept	2016 Q4	2016 Q3	2016 Q2
Revenue	$231.8M	$272.7M	$265.7M
YoY Change	-17.82%	-10.58%	4.96%
Cost Of Revenue	$173.1M	$204.8M	$196.9M
YoY Change	-23.13%	-15.91%	-5.82%
Gross Profit	$53.88M	$67.89M	$68.84M
YoY Change	4.53%	10.57%	56.04%
Gross Profit Margin	23.24%	24.89%	25.91%
Selling, General & Admin	$40.70M	$41.37M	$40.27M
YoY Change	-2.86%	8.85%	22.33%
% of Gross Profit	75.54%	60.93%	58.49%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$6.500M	$5.700M	$5.800M
YoY Change	-16.67%	-40.0%	-18.31%
% of Gross Profit	12.06%	8.4%	8.42%
Operating Expenses	$40.70M	$41.37M	$40.27M
YoY Change	-2.86%	8.85%	22.33%
Operating Profit	$629.0K	$26.52M	$28.58M
YoY Change	-86.08%	13.37%	155.12%
Interest Expense	$3.595M	$3.625M	$3.666M
YoY Change	-0.53%	-6.52%	-3.8%
% of Operating Profit	571.54%	13.67%	12.83%
Other Income/Expense, Net	-$600.0K	-$159.0K	-$8.195M
YoY Change	200.0%	-108.93%	644.32%
Pretax Income	-$3.600M	$22.74M	$16.72M
YoY Change	-614.29%	6.77%	165.78%
Income Tax	$4.100M	$8.952M	-$1.897M
% Of Pretax Income		39.37%	-11.35%
Net Earnings	-$7.752M	$13.79M	$18.61M
YoY Change	-3623.64%	1.13%	355.4%
Net Earnings / Revenue	-3.34%	5.05%	7.0%
Basic Earnings Per Share		$0.44	$0.59
Diluted Earnings Per Share	-$246.1K	$0.43	$0.58
COMMON SHARES
Basic Shares Outstanding	31.53M shares	31.58M shares	31.48M shares
Diluted Shares Outstanding		32.18M shares	32.01M shares

Balance Sheet

Concept	2016 Q4	2016 Q3	2016 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$170.2M	$173.1M	$124.1M
YoY Change	147.02%	299.77%	214.97%
Cash & Equivalents	$170.2M	$208.0M	$124.1M
Short-Term Investments
Other Short-Term Assets	$7.336M	$9.897M	$12.12M
YoY Change	-30.38%	-59.63%	-48.07%
Inventory	$89.61M	$92.78M	$98.22M
Prepaid Expenses
Receivables	$124.1M	$155.4M	$150.2M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$391.2M	$431.2M	$384.6M
YoY Change	11.32%	16.23%	1.78%
LONG-TERM ASSETS
Property, Plant & Equipment	$108.3M	$106.3M	$108.8M
YoY Change	-8.94%	-12.29%	-12.95%
Goodwill	$304.0M	$294.9M	$294.8M
YoY Change	3.98%	1.0%	0.64%
Intangibles	$110.8M	$118.4M	$120.4M
YoY Change	-9.94%	-10.23%	-11.92%
Long-Term Investments
YoY Change
Other Assets	$3.922M	$4.100M	$4.336M
YoY Change	-2.32%	-2.36%	-41.88%
Total Long-Term Assets	$527.0M	$523.7M	$528.4M
YoY Change	-2.1%	-4.66%	-6.0%
TOTAL ASSETS
Total Short-Term Assets	$391.2M	$431.2M	$384.6M
Total Long-Term Assets	$527.0M	$523.7M	$528.4M
Total Assets	$918.2M	$954.8M	$913.0M
YoY Change	3.2%	3.76%	-2.87%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$69.94M	$87.50M	$82.81M
YoY Change	-21.59%	-16.07%	-27.83%
Accrued Expenses	$70.39M	$63.11M	$49.33M
YoY Change	4.12%	-9.29%	-46.6%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$400.0K	$400.0K	$400.0K
YoY Change	0.0%	0.0%	0.0%
Total Short-Term Liabilities	$152.1M	$177.0M	$162.9M
YoY Change	-17.97%	-9.87%	-21.5%
LONG-TERM LIABILITIES
Long-Term Debt	$209.2M	$209.0M	$208.8M
YoY Change	0.17%	-5.33%	-13.99%
Other Long-Term Liabilities	$58.04M	$55.75M	$48.54M
YoY Change	35.75%	40.44%	26.63%
Total Long-Term Liabilities	$267.3M	$264.8M	$257.4M
YoY Change	6.21%	1.64%	-8.45%
TOTAL LIABILITIES
Total Short-Term Liabilities	$152.1M	$177.0M	$162.9M
Total Long-Term Liabilities	$267.3M	$264.8M	$257.4M
Total Liabilities	$419.4M	$441.8M	$420.3M
YoY Change	-4.04%	-3.31%	-13.99%
SHAREHOLDERS EQUITY
Retained Earnings	$211.7M	$219.5M	$201.6M
YoY Change	18.91%	23.42%	22.73%
Common Stock	$320.0K	$320.0K	$319.0K
YoY Change	0.95%	1.59%	1.59%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$7.885M	$7.524M	$6.808M
YoY Change	24.25%	26.28%	17.85%
Treasury Stock Shares	530.0K shares	521.0K shares	502.0K shares
Shareholders Equity	$460.9M	$469.6M	$449.6M
YoY Change
Total Liabilities & Shareholders Equity	$918.2M	$954.8M	$913.0M
YoY Change	3.2%	3.76%	-2.87%

Cashflow Statement

Concept	2016 Q4	2016 Q3	2016 Q2
OPERATING ACTIVITIES
Net Income	-$7.752M	$13.79M	$18.61M
YoY Change	-3623.64%	1.13%	355.4%
Depreciation, Depletion And Amortization	$6.500M	$5.700M	$5.800M
YoY Change	-16.67%	-40.0%	-18.31%
Cash From Operating Activities	$21.80M	$52.80M	$33.90M
YoY Change	-48.34%	61.47%	27.44%
INVESTING ACTIVITIES
Capital Expenditures	-$3.200M	-$3.600M	-$2.500M
YoY Change	-42.86%	63.64%	-3.85%
Acquisitions
YoY Change
Other Investing Activities	-$20.40M	-$100.0K	$8.500M
YoY Change	-20500.0%	-98.36%	-106.39%
Cash From Investing Activities	-$23.60M	-$3.700M	$6.000M
YoY Change	337.04%	-55.42%	-104.42%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	0.000	200.0K	1.400M
YoY Change	-100.0%	-101.05%	-95.29%
NET CHANGE
Cash From Operating Activities	21.80M	52.80M	33.90M
Cash From Investing Activities	-23.60M	-3.700M	6.000M
Cash From Financing Activities	0.000	200.0K	1.400M
Net Change In Cash	-1.800M	49.30M	41.30M
YoY Change	-106.84%	830.19%	-152.02%
FREE CASH FLOW
Cash From Operating Activities	$21.80M	$52.80M	$33.90M
Capital Expenditures	-$3.200M	-$3.600M	-$2.500M
Free Cash Flow	$25.00M	$56.40M	$36.40M
YoY Change	-47.7%	61.6%	24.66%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2017	dei	Amendment Flag AmendmentFlag	false
CY2017	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2017	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2017	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2017
CY2017	dei	Document Period End Date DocumentPeriodEndDate	2017-12-31
CY2017	dei	Document Type DocumentType	10-K
CY2017	dei	Entity Central Index Key EntityCentralIndexKey	0000912562
CY2018Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	31748874	shares
CY2017	rock	Effective Income Tax Rate Reconciliation Deduction Intercompany Debt Discharge Percent EffectiveIncomeTaxRateReconciliationDeductionIntercompanyDebtDischargePercent	0.000
CY2017	rock	Effective Income Tax Rate Reconciliation Deduction Intercompany Debt Discharge EffectiveIncomeTaxRateReconciliationDeductionIntercompanyDebtDischarge	0	USD
CY2015	rock	Effective Income Tax Rate Reconciliation Deduction Intercompany Debt Discharge Percent EffectiveIncomeTaxRateReconciliationDeductionIntercompanyDebtDischargePercent	0.000
CY2016	rock	Effective Income Tax Rate Reconciliation Deduction Intercompany Debt Discharge Percent EffectiveIncomeTaxRateReconciliationDeductionIntercompanyDebtDischargePercent	0.048
CY2017	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2017	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2017Q2	dei	Entity Public Float EntityPublicFloat	1140000000	USD
CY2017	dei	Entity Registrant Name EntityRegistrantName	GIBRALTAR INDUSTRIES, INC.
CY2017	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2017	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2017	dei	Trading Symbol TradingSymbol	ROCK
CY2016Q4	rock	Accountsand Contract Receivables Gross Current AccountsandContractReceivablesGrossCurrent	129344000	USD
CY2017Q4	rock	Accountsand Contract Receivables Gross Current AccountsandContractReceivablesGrossCurrent	151819000	USD
CY2016Q4	rock	Accrued Customer Rebates Current AccruedCustomerRebatesCurrent	10303000	USD
CY2017Q4	rock	Accrued Customer Rebates Current AccruedCustomerRebatesCurrent	10517000	USD
CY2016Q4	rock	Accrued Equity Based Compensation AccruedEquityBasedCompensation	45500000	USD
CY2017Q4	rock	Accrued Equity Based Compensation AccruedEquityBasedCompensation	48000000	USD
CY2015Q4	rock	Accumulated Other Comprehensive Income Loss Tax AccumulatedOtherComprehensiveIncomeLossTax	-1510000	USD
CY2016Q4	rock	Accumulated Other Comprehensive Income Loss Tax AccumulatedOtherComprehensiveIncomeLossTax	-1080000	USD
CY2017Q4	rock	Accumulated Other Comprehensive Income Loss Tax AccumulatedOtherComprehensiveIncomeLossTax	-970000	USD
CY2016Q4	rock	Acquired Intangible Assets Total AcquiredIntangibleAssetsTotal	158366000	USD
CY2017Q4	rock	Acquired Intangible Assets Total AcquiredIntangibleAssetsTotal	161446000	USD
CY2017Q4	rock	Cash Held In Foreign Operations CashHeldInForeignOperations	24400000	USD
CY2016Q4	rock	Contracts Receivable Gross Current ContractsReceivableGrossCurrent	48151000	USD
CY2017Q4	rock	Contracts Receivable Gross Current ContractsReceivableGrossCurrent	72961000	USD
CY2016Q4	rock	Deferred Tax Liabilities Foreign Withholding Tax DeferredTaxLiabilitiesForeignWithholdingTax	0	USD
CY2017Q4	rock	Deferred Tax Liabilities Foreign Withholding Tax DeferredTaxLiabilitiesForeignWithholdingTax	1014000	USD
CY2016Q2	rock	Disposal Group Not Discontinued Operation Gain Losson Disposal Netof Tax DisposalGroupNotDiscontinuedOperationGainLossonDisposalNetofTax	2000000	USD
CY2015	rock	Effective Income Tax Rate Reconciliation Deduction Intercompany Debt Discharge EffectiveIncomeTaxRateReconciliationDeductionIntercompanyDebtDischarge	0	USD
CY2016	rock	Effective Income Tax Rate Reconciliation Deduction Intercompany Debt Discharge EffectiveIncomeTaxRateReconciliationDeductionIntercompanyDebtDischarge	2389000	USD
CY2015	rock	Effective Income Tax Rate Reconciliation Sharebased Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitAmount	0	USD
CY2016	rock	Effective Income Tax Rate Reconciliation Sharebased Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitAmount	0	USD
CY2017	rock	Effective Income Tax Rate Reconciliation Sharebased Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitAmount	1415000	USD
CY2015	rock	Effective Income Tax Rate Reconciliation Sharebased Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitPercent	0.000
CY2016	rock	Effective Income Tax Rate Reconciliation Sharebased Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitPercent	0.000
CY2017	rock	Effective Income Tax Rate Reconciliation Sharebased Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitPercent	0.018
CY2015	rock	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	0	USD
CY2016	rock	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	0	USD
CY2017	rock	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	-12535000	USD
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CY2016	rock	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0.000
CY2017	rock	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	-0.161
CY2015	rock	Equity Earnings From Subsidiaries EquityEarningsFromSubsidiaries	0	USD
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CY2017	rock	Equity Earnings From Subsidiaries EquityEarningsFromSubsidiaries	0	USD
CY2017	rock	Sharebased Compensation Arrangementby Sharebased Payment Award Options Grantsin Period Black Scholes Fair Value SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsGrantsinPeriodBlackScholesFairValue	12.85
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CY2016Q4	rock	Inter Company Balances InterCompanyBalances	0	USD
CY2017Q4	rock	Inter Company Balances InterCompanyBalances	0	USD
CY2015	rock	Inter Company Financing InterCompanyFinancing	0	USD
CY2016	rock	Inter Company Financing InterCompanyFinancing	0	USD
CY2017	rock	Inter Company Financing InterCompanyFinancing	0	USD
CY2015	rock	Inventory Valuation Excess Obsolete And Slow Moving Inventory InventoryValuationExcessObsoleteAndSlowMovingInventory	1539000	USD
CY2016	rock	Inventory Valuation Excess Obsolete And Slow Moving Inventory InventoryValuationExcessObsoleteAndSlowMovingInventory	-239000	USD
CY2017	rock	Inventory Valuation Excess Obsolete And Slow Moving Inventory InventoryValuationExcessObsoleteAndSlowMovingInventory	1276000	USD
CY2015	rock	Inventory Valuation Scrapped Inventory And Other Adjustments InventoryValuationScrappedInventoryAndOtherAdjustments	-314000	USD
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CY2015	rock	Other Comprehensive Income Minimum Pension Liability Net Adjustment Net Of Tax1 OtherComprehensiveIncomeMinimumPensionLiabilityNetAdjustmentNetOfTax1	-49000	USD
CY2016	rock	Other Comprehensive Income Minimum Pension Liability Net Adjustment Net Of Tax1 OtherComprehensiveIncomeMinimumPensionLiabilityNetAdjustmentNetOfTax1	-55000	USD
CY2017	rock	Other Comprehensive Income Minimum Pension Liability Net Adjustment Net Of Tax1 OtherComprehensiveIncomeMinimumPensionLiabilityNetAdjustmentNetOfTax1	9000	USD
CY2015	rock	Other Comprehensive Income Minimum Pension Liability Net Adjustment Tax1 OtherComprehensiveIncomeMinimumPensionLiabilityNetAdjustmentTax1	-30000	USD
CY2016	rock	Other Comprehensive Income Minimum Pension Liability Net Adjustment Tax1 OtherComprehensiveIncomeMinimumPensionLiabilityNetAdjustmentTax1	-9000	USD
CY2017	rock	Other Comprehensive Income Minimum Pension Liability Net Adjustment Tax1 OtherComprehensiveIncomeMinimumPensionLiabilityNetAdjustmentTax1	-25000	USD
CY2015	rock	Restructuringand Related Cost Numberof Facilitiestobe Closed RestructuringandRelatedCostNumberofFacilitiestobeClosed	4	facility
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CY2016	rock	Revenue Recognition Revenue Recognized Under Percentageof Completion Method RevenueRecognitionRevenueRecognizedUnderPercentageofCompletionMethod	0.258
CY2017	rock	Revenue Recognition Revenue Recognized Under Percentageof Completion Method RevenueRecognitionRevenueRecognizedUnderPercentageofCompletionMethod	0.280
CY2015	rock	Share Based Goodsand Nonemployee Services Transaction Sharebased Compensation ShareBasedGoodsandNonemployeeServicesTransactionSharebasedCompensation	0	USD
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CY2017	rock	Share Based Goodsand Nonemployee Services Transaction Sharebased Compensation ShareBasedGoodsandNonemployeeServicesTransactionSharebasedCompensation	420000	USD
CY2015	rock	Sharebased Compensation Arrangementby Sharebased Payment Award Options Grantsin Period Black Scholes Fair Value SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsGrantsinPeriodBlackScholesFairValue	7.67
CY2016	rock	Stock Compensation Expense Recognized Under Equity Incentive Plan StockCompensationExpenseRecognizedUnderEquityIncentivePlan	3993000	USD
CY2017	rock	Stock Compensation Expense Recognized Under Equity Incentive Plan StockCompensationExpenseRecognizedUnderEquityIncentivePlan	5643000	USD
CY2015	rock	Stock Compensation Expense Recognized Under Terminated Plans StockCompensationExpenseRecognizedUnderTerminatedPlans	1953000	USD
CY2016	rock	Stock Compensation Expense Recognized Under Terminated Plans StockCompensationExpenseRecognizedUnderTerminatedPlans	1937000	USD
CY2017	rock	Stock Compensation Expense Recognized Under Terminated Plans StockCompensationExpenseRecognizedUnderTerminatedPlans	1059000	USD
CY2015	rock	Stock Issued During Period Value Restricted Stock Award Settlement StockIssuedDuringPeriodValueRestrictedStockAwardSettlement	956000	USD
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CY2017	us-gaap	Advertising Expense AdvertisingExpense	4900000	USD
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CY2015	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	8504000	USD
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CY2017	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	-1877000	USD
CY2015	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	12679000	USD
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	9637000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	8761000	USD
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-41752000	USD
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	101319000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	52103000	USD
CY2016Q4	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
CY2016Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
CY2016Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	32085000	shares
CY2017Q4	us-gaap	Assets Assets	991385000	USD
CY2016Q4	us-gaap	Assets Current AssetsCurrent	391197000	USD
CY2017Q4	us-gaap	Assets Current AssetsCurrent	462764000	USD
CY2016Q4	us-gaap	Billed Contract Receivables BilledContractReceivables	41569000	USD
CY2017Q4	us-gaap	Billed Contract Receivables BilledContractReceivables	61351000	USD
CY2016Q4	us-gaap	Billings In Excess Of Cost Current BillingsInExcessOfCostCurrent	11352000	USD
CY2017Q4	us-gaap	Billings In Excess Of Cost Current BillingsInExcessOfCostCurrent	12779000	USD
CY2016Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	50283000	USD
CY2017Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	46562000	USD
CY2015	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	962000	USD
CY2016	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	309000	USD
CY2017	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	146000	USD
CY2015	us-gaap	Business Exit Costs1 BusinessExitCosts1	3123000	USD
CY2016	us-gaap	Business Exit Costs1 BusinessExitCosts1	13747000	USD
CY2017	us-gaap	Business Exit Costs1 BusinessExitCosts1	5495000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	110610000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	68858000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	170177000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	222280000	USD
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	32332000	shares
CY2016Q4	us-gaap	Common Stock Value CommonStockValue	320000	USD
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	323000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	17583000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	41370000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	65915000	USD
CY2016Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	2202000	USD
CY2017Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	8522000	USD
CY2015	us-gaap	Cost Of Revenue CostOfRevenue	853897000	USD
CY2016	us-gaap	Cost Of Revenue CostOfRevenue	763219000	USD
CY2017	us-gaap	Cost Of Revenue CostOfRevenue	750374000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2051000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4893000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7105000	USD
CY2016Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	76552000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	54819000	USD
CY2016Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	38002000	USD
CY2016	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	52000	USD
CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	29000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	-197000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	-171000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	200000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.04
CY2017	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.05
CY2015	us-gaap	Depreciation Depreciation	17869000	USD
CY2016	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	372000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	31237000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	39912000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	25824000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	38550000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	23582000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	3500000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	18473000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	13247000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	21439000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	12577000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1362000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2242000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	38002000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	31237000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Goodwill DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill	43562000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Goodwill DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill	32662000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	14731000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	10928000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	892000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	652000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	17367000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	9563000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	27200000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	173000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	4000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	2000	USD
CY2016	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-5000	USD
CY2017	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-7000	USD
CY2015	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	0	USD
CY2016	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	13000	USD
CY2017	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	19000	USD
CY2015	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	14000	USD
CY2016	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	6000	USD
CY2017	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	2000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-1573000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-1241000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0394
CY2016Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0381
CY2017Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0355
CY2015Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	1685000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	1377000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	1070000	USD
CY2017	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	360000	USD
CY2016	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	824000	USD
CY2017	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	803000	USD
CY2016	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	35000	USD
CY2017	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	34000	USD
CY2016	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	975000	USD
CY2017	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	950000	USD
CY2016	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	42000	USD
CY2017	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	41000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	292000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	327000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	100000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	100000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	137000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	228000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2017Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2016Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-1377000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-1070000	USD
CY2015	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	66000	USD
CY2016	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	59000	USD
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	46000	USD
CY2015	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	80000	USD
CY2016	us-gaap	Depreciation Depreciation	14477000	USD
CY2017	us-gaap	Depreciation Depreciation	12929000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.98
CY2015	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.74
CY2016Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.28
CY2016Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.58
CY2016Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.43
CY2016Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.24
CY2016	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.05
CY2017Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.12
CY2015	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	30548000	USD
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	24114000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	21690000	USD
CY2015	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-44000	USD
CY2016	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-70000	USD
CY2017	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-644000	USD
CY2015	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-16000	USD
CY2016	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-26000	USD
CY2017	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-239000	USD
CY2016Q2	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	8800000	USD
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.75
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.07
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.97
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.74
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.05
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.94
CY2015	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-2912000	USD
CY2016	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-146000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	1428000	USD
CY2015	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.367
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.325
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.192
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.007
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.014
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.008
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Deductions Other EffectiveIncomeTaxRateReconciliationDeductionsOther	0.000
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Deductions Other EffectiveIncomeTaxRateReconciliationDeductionsOther	0.017
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Deductions Other EffectiveIncomeTaxRateReconciliationDeductionsOther	0.000
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.021
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.027
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.020
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.000
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.014
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.000
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.000
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.011
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.007
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	0.000
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	0.007
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	0.000
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.003
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.000
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.002
CY2015	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.050
CY2016	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.061
CY2017Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.41
CY2017Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.64
CY2017Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.78
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.95
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-28000	USD
CY2016Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2016Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2016Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2016Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.031
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.009
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.003
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.002
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.007
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.009
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.005
CY2016Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	27669000	USD
CY2017Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	34752000	USD
CY2017Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	9200000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y0M1D
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1518000	USD
CY2016	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2485000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2133000	USD
CY2015	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	816000	USD
CY2016	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2115000	USD
CY2017	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	91000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	47576000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	55678000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	8289000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	6093000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	6504000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	7106000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	7618000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	113646000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	116339000	USD
CY2015	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	6431000	USD
CY2016	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	42000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	123000	USD
CY2015	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2016	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	-8763000	USD
CY2017	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2015Q4	us-gaap	Goodwill Goodwill	292390000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	304032000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	321074000	USD
CY2016	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	12283000	USD
CY2017	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	16790000	USD
CY2015	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	4863000	USD
CY2016	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	10175000	USD
CY2017	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	247000	USD
CY2016	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	288000	USD
CY2017	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	1084000	USD
CY2016Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	255530000	USD
CY2017Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	235400000	USD
CY2016	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	929000	USD
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2017Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2017	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	832000	USD
CY2015	us-gaap	Gross Profit GrossProfit	186976000	USD
CY2016Q1	us-gaap	Gross Profit GrossProfit	54150000	USD
CY2016Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	9029000	USD
CY2016Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	18612000	USD
CY2016Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	13786000	USD
CY2016Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-7708000	USD
CY2016Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2016Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2016Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2016Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-44000	USD
CY2016Q2	us-gaap	Gross Profit GrossProfit	68843000	USD
CY2016Q3	us-gaap	Gross Profit GrossProfit	67887000	USD
CY2016Q4	us-gaap	Gross Profit GrossProfit	53882000	USD
CY2016	us-gaap	Gross Profit GrossProfit	244762000	USD
CY2017Q1	us-gaap	Gross Profit GrossProfit	49255000	USD
CY2017Q2	us-gaap	Gross Profit GrossProfit	61825000	USD
CY2017Q3	us-gaap	Gross Profit GrossProfit	68735000	USD
CY2017Q4	us-gaap	Gross Profit GrossProfit	56729000	USD
CY2017	us-gaap	Gross Profit GrossProfit	236544000	USD
CY2015	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2016	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	198000	USD
CY2017	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2015	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	4863000	USD
CY2016	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	9048000	USD
CY2017	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	247000	USD
CY2015	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	23476000	USD
CY2016	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	33719000	USD
CY2017Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	3996000	USD
CY2017Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	13174000	USD
CY2017Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	20619000	USD
CY2017Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	25176000	USD
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	62965000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	40176000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	37316000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	78468000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	37100000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	49983000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	77908000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-3076000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	12667000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-560000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.75
CY2016Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.29
CY2016Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.59
CY2016Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.44
CY2016Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.24
CY2016	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.07
CY2017Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.13
CY2017Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.41
CY2017Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.65
CY2017Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.79
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-44000	USD
CY2017Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-405000	USD
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2017Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-405000	USD
CY2017Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2017Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2017Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.01
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13624000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16264000	USD
CY2016Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2016Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2017Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2017Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.01
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2017Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2017Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.01
CY2017Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2017Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.01
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2016Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2016Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14943000	USD
CY2015	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	284000	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	685000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	660000	USD
CY2015	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	0	USD
CY2016	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	868000	USD
CY2017	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	0	USD
CY2015	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	795000	USD
CY2016	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	1363000	USD
CY2017	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	1578000	USD
CY2015	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-6000	USD
CY2016	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-677000	USD
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	2000	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	12985000	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	17494000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	27268000	USD
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	2000	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	556000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	499000	USD
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	341000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2015	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-105000	USD
CY2016	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	45000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	121000	USD
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1845000	USD
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3033000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2442000	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-344000	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-154000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-148000	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	242000	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	439000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	373000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-11879000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-17700000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-26186000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-5157000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-17060000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	11332000	USD
CY2015	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	17215000	USD
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-37828000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	21806000	USD
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-22271000	USD
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-11782000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-870000	USD
CY2015	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	19004000	USD
CY2016	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	1253000	USD
CY2017	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-2734000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-759000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-2511000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2629000	USD
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	312000	shares
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	533000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	549000	shares
CY2016Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	110790000	USD
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	105768000	USD
CY2015	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	166000	USD
CY2016	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	138000	USD
CY2017	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	137000	USD
CY2015	us-gaap	Interest Expense InterestExpense	15003000	USD
CY2016Q1	us-gaap	Interest Expense InterestExpense	3691000	USD
CY2016Q2	us-gaap	Interest Expense InterestExpense	3666000	USD
CY2016Q3	us-gaap	Interest Expense InterestExpense	3625000	USD
CY2016Q4	us-gaap	Interest Expense InterestExpense	3595000	USD
CY2016	us-gaap	Interest Expense InterestExpense	14577000	USD
CY2017Q1	us-gaap	Interest Expense InterestExpense	3576000	USD
CY2017Q2	us-gaap	Interest Expense InterestExpense	3550000	USD
CY2017Q3	us-gaap	Interest Expense InterestExpense	3486000	USD
CY2017Q4	us-gaap	Interest Expense InterestExpense	3420000	USD
CY2017	us-gaap	Interest Expense InterestExpense	14032000	USD
CY2015	us-gaap	Interest Paid InterestPaid	15374000	USD
CY2016	us-gaap	Interest Paid InterestPaid	13906000	USD
CY2017	us-gaap	Interest Paid InterestPaid	13385000	USD
CY2016Q4	us-gaap	Long Term Debt LongTermDebt	209637000	USD
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	210021000	USD
CY2016Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	400000	USD
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	400000	USD
CY2016Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	35586000	USD
CY2017Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	33113000	USD
CY2016Q4	us-gaap	Inventory Net InventoryNet	89612000	USD
CY2017Q4	us-gaap	Inventory Net InventoryNet	86372000	USD
CY2016Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	41758000	USD
CY2017Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	42661000	USD
CY2014Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	5575000	USD
CY2015Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	7428000	USD
CY2016Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	3801000	USD
CY2017Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	3695000	USD
CY2016Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	12268000	USD
CY2017Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	10598000	USD
CY2016Q4	us-gaap	Investments Investments	0	USD
CY2017Q4	us-gaap	Investments Investments	0	USD
CY2016Q4	us-gaap	Land And Land Improvements LandAndLandImprovements	7102000	USD
CY2017Q4	us-gaap	Land And Land Improvements LandAndLandImprovements	6301000	USD
CY2017Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	11200000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	918245000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	991385000	USD
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	152088000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	171033000	USD
CY2016Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	287200000	USD
CY2017Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	288800000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	400000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	400000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	400000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	210400000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	400000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	400000	USD
CY2016Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	209237000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	209621000	USD
CY2016Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	212774000	USD
CY2017Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	195301000	USD
CY2015	us-gaap	Multiemployer Plan Contributions By Employer MultiemployerPlanContributionsByEmployer	333000	USD
CY2016	us-gaap	Multiemployer Plan Contributions By Employer MultiemployerPlanContributionsByEmployer	296000	USD
CY2017	us-gaap	Multiemployer Plan Contributions By Employer MultiemployerPlanContributionsByEmployer	292000	USD
CY2017Q4	us-gaap	Multiemployer Plans Collective Bargaining Arrangement Percentage Of Participants MultiemployerPlansCollectiveBargainingArrangementPercentageOfParticipants	0.11
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-721000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1348000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2598000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	73488000	USD
CY2017Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	9679000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-125340000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-23870000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-16797000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	87221000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	123987000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	70070000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	23448000	USD
CY2016Q1	us-gaap	Net Income Loss NetIncomeLoss	9029000	USD
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	18612000	USD
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	13786000	USD
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	-7752000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	33675000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	3996000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	12769000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	20619000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	25176000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	62560000	USD
CY2015Q4	us-gaap	Noncurrent Assets NoncurrentAssets	122947000	USD
CY2016Q4	us-gaap	Noncurrent Assets NoncurrentAssets	112226000	USD
CY2017Q4	us-gaap	Noncurrent Assets NoncurrentAssets	101779000	USD
CY2017	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	48732000	USD
CY2016Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	17761000	USD
CY2016Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	28576000	USD
CY2016Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	26522000	USD
CY2016Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	629000	USD
CY2017Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	24930000	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	35693000	USD
CY2017Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	22547000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	92849000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	11072000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	3817000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	4773000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	6521000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	9274000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	5211000	USD
CY2015	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	13959000	USD
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	13652000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	11964000	USD
CY2017Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	22500000	USD
CY2016Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	11734000	USD
CY2017Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	14935000	USD
CY2016Q4	us-gaap	Other Assets Current OtherAssetsCurrent	7336000	USD
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	8727000	USD
CY2016Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	3922000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	4681000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	1180000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	315000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-6228000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	6945000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	3150000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5865000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7695000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3355000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-171000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-695000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-214000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-45000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-830000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-99000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	750000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	205000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	430000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	110000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	143000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	82000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	82000	USD
CY2015	us-gaap	Other Income OtherIncome	3371000	USD
CY2016	us-gaap	Other Income OtherIncome	-8928000	USD
CY2017	us-gaap	Other Income OtherIncome	-909000	USD
CY2016Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	58038000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	47775000	USD
CY2015	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-4759000	USD
CY2016	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1934000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-2118000	USD
CY2015	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1154000	USD
CY2016	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1118000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	956000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1539000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2872000	USD
CY2016	us-gaap	Payments For Restructuring PaymentsForRestructuring	3076000	USD
CY2017	us-gaap	Payments For Restructuring PaymentsForRestructuring	9908000	USD
CY2015	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	1166000	USD
CY2016	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	54000	USD
CY2017	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	0	USD
CY2015	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	140621000	USD
CY2016	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	23412000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	18494000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	12373000	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10779000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	11399000	USD
CY2016Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	360000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	327000	USD
CY2016Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	1016000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	743000	USD
CY2015	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	2934000	USD
CY2016	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	2887000	USD
CY2017	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	3044000	USD
CY2016Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2017Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2016Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2016Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2017Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2016Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2016Q2	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	8300000	USD
CY2015	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2016	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	8250000	USD
CY2017	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1801000	USD
CY2016	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	3341000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	674000	USD
CY2015	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	73242000	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2015	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	26500000	USD
CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	953000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	13096000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	272361000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	256686000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	108304000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	97098000	USD
CY2015	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1404000	USD
CY2016	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2519000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1253000	USD
CY2015	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	73642000	USD
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	400000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	400000	USD
CY2015	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	900000	USD
CY2016	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	2200000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3536000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	331000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	2900000	USD
CY2015	us-gaap	Restructuring Charges RestructuringCharges	1418000	USD
CY2016	us-gaap	Restructuring Charges RestructuringCharges	6217000	USD
CY2017	us-gaap	Restructuring Charges RestructuringCharges	7125000	USD
CY2015Q4	us-gaap	Restructuring Reserve RestructuringReserve	603000	USD
CY2016Q4	us-gaap	Restructuring Reserve RestructuringReserve	3744000	USD
CY2017Q4	us-gaap	Restructuring Reserve RestructuringReserve	961000	USD
CY2015	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	8504000	USD
CY2016	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	7530000	USD
CY2017	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	-1630000	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	211748000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	274562000	USD
CY2015	us-gaap	Sale Leaseback Transaction Current Period Gain Recognized SaleLeasebackTransactionCurrentPeriodGainRecognized	6799000	USD
CY2015	us-gaap	Sales Revenue Net SalesRevenueNet	1040873000	USD
CY2016Q1	us-gaap	Sales Revenue Net SalesRevenueNet	237671000	USD
CY2016Q2	us-gaap	Sales Revenue Net SalesRevenueNet	265738000	USD
CY2016Q3	us-gaap	Sales Revenue Net SalesRevenueNet	272734000	USD
CY2016Q4	us-gaap	Sales Revenue Net SalesRevenueNet	231838000	USD
CY2016	us-gaap	Sales Revenue Net SalesRevenueNet	1007981000	USD
CY2017Q1	us-gaap	Sales Revenue Net SalesRevenueNet	206605000	USD
CY2017Q2	us-gaap	Sales Revenue Net SalesRevenueNet	247627000	USD
CY2017Q3	us-gaap	Sales Revenue Net SalesRevenueNet	274574000	USD
CY2017Q4	us-gaap	Sales Revenue Net SalesRevenueNet	258112000	USD
CY2017	us-gaap	Sales Revenue Net SalesRevenueNet	986918000	USD
CY2015	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	133381000	USD
CY2016	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	161099000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	143448000	USD
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	3891000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	6373000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	7122000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.000
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.015
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.017
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.357
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.357
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	197666	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	1089000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	2439000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	628000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	29374	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	6000	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	12500	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	37500	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	37500	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	256000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	422000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	-87000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	-122000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	25000	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	25000	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	7.67
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0.00
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	12.85
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	4194000	USD
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	569319	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	458349	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	277224	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	247666	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	15.88
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	16.57
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	14.95
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	17.01
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	15.13
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	19.08
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	16.02
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	20.28
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	18.22
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	25.44
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	25.44
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	42.35
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y3M7D
CY2015	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	119096	shares
CY2016	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	175125	shares
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	42058	shares
CY2015	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1802000	USD
CY2016	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	3341000	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	674000	USD
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	387229000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	410086000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	460880000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	531719000	USD
CY2016Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	530000	shares
CY2017Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	615000	shares
CY2016Q4	us-gaap	Treasury Stock Value TreasuryStockValue	7885000	USD
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	10757000	USD
CY2016Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	3163000	USD
CY2017Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	2379000	USD
CY2016Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	6582000	USD
CY2017Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	11610000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1414000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3876000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3466000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	-130000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	148000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	33000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	99000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2955000	USD
CY2016	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
CY2015	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	310000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	600000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	300000	USD
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	31545000	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32069000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32250000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31233000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31536000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31701000	shares
CY2017	us-gaap	Advertising Cost Policy Expensed Advertising Cost AdvertisingCostPolicyExpensedAdvertisingCost	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">Advertising</font></div><div style="line-height:120%;padding-top:8px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company expenses advertising costs as incurred.</font></div></div>
CY2017	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">Use of estimates</font></div><div style="line-height:120%;padding-top:8px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.</font></div></div>

Files In Submission

Name	View Source	Status
0000912562-18-000006-index-headers.html	Edgar Link	pending
0000912562-18-000006-index.html	Edgar Link	pending
0000912562-18-000006.txt	Edgar Link	pending
0000912562-18-000006-xbrl.zip	Edgar Link	pending
bracket_image.jpg	Edgar Link	pending
bracket_imagea01.jpg	Edgar Link	pending
cover_image.jpg	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
item5stockgraph.jpg	Edgar Link	pending
picture.jpg	Edgar Link	pending
q42017exhibit21.htm	Edgar Link	pending
q42017exhibit231-eyconsent.htm	Edgar Link	pending
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report.css	Edgar Link	pending
rock-20171231.xml	Edgar Link	completed
rock-20171231.xsd	Edgar Link	pending
rock-20171231x10k.htm	Edgar Link	pending
rock-20171231_cal.xml	Edgar Link	unprocessable
rock-20171231_def.xml	Edgar Link	unprocessable
rock-20171231_lab.xml	Edgar Link	unprocessable
rock-20171231_pre.xml	Edgar Link	unprocessable
Show.js	Edgar Link	pending

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$ROCK
GIBRALTAR INDUSTRIES, INC. Stock $rock

2016 Q4 Form 10-K Financial Statement

#000091256218000006 Filed on February 27, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ROCK GIBRALTAR INDUSTRIES, INC. Stock $rock

2016 Q4 Form 10-K Financial Statement

#000091256218000006 Filed on February 27, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ROCK
GIBRALTAR INDUSTRIES, INC. Stock $rock