$GVA
GRANITE CONSTRUCTION INC Stock $gva

$gva Overview Financials Valuation SEC Filings Company Website

2017 Q4 Form 10-K Financial Statement

#000086145918000008 Filed on February 16, 2018

Income Statement

Concept	2017 Q4	2017 Q3	2017 Q2
Revenue	$801.3M	$957.1M	$762.9M
YoY Change	20.19%	19.06%	26.19%
Cost Of Revenue	$705.4M	$842.6M	$688.3M
YoY Change	20.5%	21.02%	29.54%
Gross Profit	$100.7M	$114.5M	$74.57M
YoY Change	23.95%	6.37%	1.87%
Gross Profit Margin	12.57%	11.97%	9.77%
Selling, General & Admin	$57.70M	$49.50M	$51.39M
YoY Change	-4.31%	-8.66%	5.51%
% of Gross Profit	57.29%	43.22%	68.91%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$17.80M	$17.40M	$16.50M
YoY Change	0.0%	1.75%	4.43%
% of Gross Profit	17.68%	15.19%	22.13%
Operating Expenses	$57.70M	$49.50M	$51.39M
YoY Change	-4.31%	-8.66%	5.51%
Operating Profit	$43.01M	$66.78M	$23.99M
YoY Change	105.28%	23.95%	-7.24%
Interest Expense	$900.0K	$2.660M	$2.694M
YoY Change	200.0%	-12.33%	-15.47%
% of Operating Profit	2.09%	3.98%	11.23%
Other Income/Expense, Net	$1.900M	$2.522M	$371.0K
YoY Change	171.43%	244.54%	-88.34%
Pretax Income	$11.00M	$69.30M	$24.36M
YoY Change	-63.21%	26.49%	-11.01%
Income Tax	$1.500M	$21.25M	$8.088M
% Of Pretax Income	13.64%	30.66%	33.2%
Net Earnings	$32.77M	$45.98M	$14.13M
YoY Change	102.64%	23.64%	-0.46%
Net Earnings / Revenue	4.09%	4.8%	1.85%
Basic Earnings Per Share	$0.82	$1.15	$0.35
Diluted Earnings Per Share	$0.81	$1.14	$0.35
COMMON SHARES
Basic Shares Outstanding	39.85M shares	39.84M	39.83M
Diluted Shares Outstanding		40.39M	40.39M

Balance Sheet

Concept	2017 Q4	2017 Q3	2017 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$549.3M	$475.7M	$456.3M
YoY Change	9.55%	1.58%	3.31%
Cash & Equivalents	$233.7M	$185.5M	$178.1M
Short-Term Investments	$315.6M	$290.2M	$278.3M
Other Short-Term Assets	$36.51M	$26.61M	$43.60M
YoY Change	-8.51%	-5.12%	36.46%
Inventory	$62.50M	$62.06M	$65.50M
Prepaid Expenses
Receivables	$583.8M	$721.6M	$584.1M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.232B	$1.286B	$1.150B
YoY Change	13.14%	11.81%	8.91%
LONG-TERM ASSETS
Property, Plant & Equipment	$407.4M	$412.2M	$414.1M
YoY Change	0.19%	1.19%	1.03%
Goodwill	$53.80M	$53.80M	$53.80M
YoY Change	0.0%	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments	$103.5M	$109.9M	$97.20M
YoY Change	4.97%	25.89%	25.91%
Other Assets	$75.20M	$85.41M	$88.55M
YoY Change	-12.0%	4.75%	5.3%
Total Long-Term Assets	$639.9M	$661.3M	$653.6M
YoY Change	-0.71%	4.12%	3.69%
TOTAL ASSETS
Total Short-Term Assets	$1.232B	$1.286B	$1.150B
Total Long-Term Assets	$639.9M	$661.3M	$653.6M
Total Assets	$1.872B	$1.947B	$1.803B
YoY Change	7.99%	9.08%	6.96%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$237.7M	$286.9M	$252.5M
YoY Change	19.42%	28.31%	19.72%
Accrued Expenses	$236.4M	$246.8M	$231.0M
YoY Change	8.14%	3.92%	9.53%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$46.05M	$14.80M	$14.80M
YoY Change	211.22%	0.01%	0.01%
Total Short-Term Liabilities	$655.3M	$717.2M	$612.6M
YoY Change	23.65%	21.13%	15.75%
LONG-TERM LIABILITIES
Long-Term Debt	$178.5M	$225.9M	$227.1M
YoY Change	-22.24%	-6.15%	-6.12%
Other Long-Term Liabilities	$44.09M	$46.44M	$47.98M
YoY Change	-4.14%	0.36%	4.95%
Total Long-Term Liabilities	$222.5M	$272.4M	$275.1M
YoY Change	-19.22%	-5.1%	-4.36%
TOTAL LIABILITIES
Total Short-Term Liabilities	$655.3M	$717.2M	$612.6M
Total Long-Term Liabilities	$222.5M	$272.4M	$275.1M
Total Liabilities	$877.8M	$989.5M	$887.6M
YoY Change	8.99%	12.57%	8.67%
SHAREHOLDERS EQUITY
Retained Earnings	$783.7M	$756.2M	$715.5M
YoY Change	6.53%	4.35%	3.28%
Common Stock	$160.8M	$158.1M	$155.9M
YoY Change	6.66%	6.86%	7.09%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$945.1M	$914.6M	$871.4M
YoY Change
Total Liabilities & Shareholders Equity	$1.872B	$1.947B	$1.803B
YoY Change	7.99%	9.08%	6.96%

Cashflow Statement

Concept	2017 Q4	2017 Q3	2017 Q2
OPERATING ACTIVITIES
Net Income	$32.77M	$45.98M	$14.13M
YoY Change	102.64%	23.64%	-0.46%
Depreciation, Depletion And Amortization	$17.80M	$17.40M	$16.50M
YoY Change	0.0%	1.75%	4.43%
Cash From Operating Activities	$81.60M	$41.90M	$9.400M
YoY Change	-11.78%	24.33%	-122.01%
INVESTING ACTIVITIES
Capital Expenditures	-$10.90M	-$19.30M	-$16.10M
YoY Change	-52.81%	1.05%	-33.47%
Acquisitions
YoY Change
Other Investing Activities	-$9.200M	-$5.100M	$21.60M
YoY Change	-26.4%	-75.0%	-41.62%
Cash From Investing Activities	-$20.10M	-$24.40M	$5.500M
YoY Change	-43.54%	-38.23%	-56.69%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-13.30M	-10.10M	-6.200M
YoY Change	-25.7%	94.23%	-12.68%
NET CHANGE
Cash From Operating Activities	81.60M	41.90M	9.400M
Cash From Investing Activities	-20.10M	-24.40M	5.500M
Cash From Financing Activities	-13.30M	-10.10M	-6.200M
Net Change In Cash	48.20M	7.400M	8.700M
YoY Change	23.59%	-167.27%	-123.45%
FREE CASH FLOW
Cash From Operating Activities	$81.60M	$41.90M	$9.400M
Capital Expenditures	-$10.90M	-$19.30M	-$16.10M
Free Cash Flow	$92.50M	$61.20M	$25.50M
YoY Change	-19.98%	15.91%	-237.84%

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	0000861459
CY2018Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	39890345	shares
CY2017	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2017	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2017Q2	dei	Entity Public Float EntityPublicFloat	1900000000	USD
CY2017	dei	Entity Registrant Name EntityRegistrantName	GRANITE CONSTRUCTION INC
CY2017	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2017	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2016Q4	gva	Accounts Notes Loans And Financing Receivable Gross Current AccountsNotesLoansAndFinancingReceivableGrossCurrent	419918000	USD
CY2017Q4	gva	Accounts Notes Loans And Financing Receivable Gross Current AccountsNotesLoansAndFinancingReceivableGrossCurrent	479943000	USD
CY2016Q4	gva	Accrued Expenses And Other Current Liabilities AccruedExpensesAndOtherCurrentLiabilities	218587000	USD
CY2017Q4	gva	Accrued Expenses And Other Current Liabilities AccruedExpensesAndOtherCurrentLiabilities	236407000	USD
CY2015	gva	Accrued Expenses And Other Current Liabilities Net AccruedExpensesAndOtherCurrentLiabilitiesNet	3859000	USD
CY2016	gva	Accrued Expenses And Other Current Liabilities Net AccruedExpensesAndOtherCurrentLiabilitiesNet	-6564000	USD
CY2017	gva	Accrued Expenses And Other Current Liabilities Net AccruedExpensesAndOtherCurrentLiabilitiesNet	11348000	USD
CY2016Q4	gva	Affirmative Claim Recovery Estimate AffirmativeClaimRecoveryEstimate	12300000	USD
CY2017Q4	gva	Affirmative Claim Recovery Estimate AffirmativeClaimRecoveryEstimate	26700000	USD
CY2016Q4	gva	Allowance For Accounts Notes Loans And Financing Receivable Current AllowanceForAccountsNotesLoansAndFinancingReceivableCurrent	573000	USD
CY2017Q4	gva	Allowance For Accounts Notes Loans And Financing Receivable Current AllowanceForAccountsNotesLoansAndFinancingReceivableCurrent	152000	USD
CY2016Q4	gva	Backchargesclaims Backchargesclaims	300000	USD
CY2017Q4	gva	Backchargesclaims Backchargesclaims	1100000	USD
CY2015	gva	Change In Accounting Estimate Amount Considered Significant To Individual Project Gross Profit ChangeInAccountingEstimateAmountConsideredSignificantToIndividualProjectGrossProfit	1000000	USD
CY2016	gva	Change In Accounting Estimate Amount Considered Significant To Individual Project Gross Profit ChangeInAccountingEstimateAmountConsideredSignificantToIndividualProjectGrossProfit	1000000	USD
CY2017	gva	Change In Accounting Estimate Amount Considered Significant To Individual Project Gross Profit ChangeInAccountingEstimateAmountConsideredSignificantToIndividualProjectGrossProfit	1000000	USD
CY2017Q4	gva	Consolidated Interest Coverage Ratio Actual ConsolidatedInterestCoverageRatioActual	15.59
CY2017Q4	gva	Consolidated Interest Coverage Ratio Covenant ConsolidatedInterestCoverageRatioCovenant	4.00
CY2015	gva	Contributionsfromnoncontrollingpartners Contributionsfromnoncontrollingpartners	7462000	USD
CY2016	gva	Contributionsfromnoncontrollingpartners Contributionsfromnoncontrollingpartners	5250000	USD
CY2017	gva	Contributionsfromnoncontrollingpartners Contributionsfromnoncontrollingpartners	11500000	USD
CY2015	gva	Costs And Estimated Earnings In Excess Of Billings Net CostsAndEstimatedEarningsInExcessOfBillingsNet	22374000	USD
CY2016	gva	Costs And Estimated Earnings In Excess Of Billings Net CostsAndEstimatedEarningsInExcessOfBillingsNet	-2100000	USD
CY2017	gva	Costs And Estimated Earnings In Excess Of Billings Net CostsAndEstimatedEarningsInExcessOfBillingsNet	26066000	USD
CY2015	gva	Debt Payments From Sale Of Assets DebtPaymentsFromSaleOfAssets	2891000	USD
CY2016	gva	Debt Payments From Sale Of Assets DebtPaymentsFromSaleOfAssets	-3865000	USD
CY2017	gva	Debt Payments From Sale Of Assets DebtPaymentsFromSaleOfAssets	-1945000	USD
CY2016Q4	gva	Deferred Tax Assets Receivables DeferredTaxAssetsReceivables	573000	USD
CY2017Q4	gva	Deferred Tax Assets Receivables DeferredTaxAssetsReceivables	526000	USD
CY2016Q4	gva	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInsurance	12524000	USD
CY2017Q4	gva	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInsurance	7401000	USD
CY2016Q4	gva	Deferred Tax Liabilities Deferred Income DeferredTaxLiabilitiesDeferredIncome	20084000	USD
CY2017Q4	gva	Deferred Tax Liabilities Deferred Income DeferredTaxLiabilitiesDeferredIncome	7739000	USD
CY2016Q4	gva	Deficit In Unconsolidatedconstruction Joint Venture DeficitInUnconsolidatedconstructionJointVenture	16600000	USD
CY2017Q4	gva	Deficit In Unconsolidatedconstruction Joint Venture DeficitInUnconsolidatedconstructionJointVenture	15900000	USD
CY2015	gva	Depreciation And Depletion DepreciationAndDepletion	61000000	USD
CY2016	gva	Depreciation And Depletion DepreciationAndDepletion	61000000	USD
CY2017	gva	Depreciation And Depletion DepreciationAndDepletion	63800000	USD
CY2015	gva	Distributions To Noncontrolling Partners Net DistributionsToNoncontrollingPartnersNet	6992000	USD
CY2016	gva	Distributions To Noncontrolling Partners Net DistributionsToNoncontrollingPartnersNet	5258000	USD
CY2017	gva	Distributions To Noncontrolling Partners Net DistributionsToNoncontrollingPartnersNet	7109000	USD
CY2015	gva	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Amount	0	USD
CY2016	gva	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Amount	0	USD
CY2017	gva	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Amount	-3664000	USD
CY2015	gva	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Percent	0.000
CY2016	gva	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Percent	0.000
CY2017	gva	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Percent	-0.035
CY2017Q4	gva	Employee Stock Purchase Plan Maximum Payroll Deduction Percent EmployeeStockPurchasePlanMaximumPayrollDeductionPercent	0.15
CY2017Q4	gva	Employee Stock Purchase Plan Percent Of Total Share Value EmployeeStockPurchasePlanPercentOfTotalShareValue	0.95
CY2015	gva	Equity In Construction Joint Ventures EquityInConstructionJointVentures	69313000	USD
CY2016	gva	Equity In Construction Joint Ventures EquityInConstructionJointVentures	11795000	USD
CY2017	gva	Equity In Construction Joint Ventures EquityInConstructionJointVentures	16937000	USD
CY2016Q4	gva	Equity In Construction Joint Ventures Current Assets EquityInConstructionJointVenturesCurrentAssets	247182000	USD
CY2017Q4	gva	Equity In Construction Joint Ventures Current Assets EquityInConstructionJointVenturesCurrentAssets	247826000	USD
CY2016Q4	gva	Equity In Construction Joint Ventures Current Assets Excluding Deficit In Equity EquityInConstructionJointVenturesCurrentAssetsExcludingDeficitInEquity	230534000	USD
CY2017Q4	gva	Equity In Construction Joint Ventures Current Assets Excluding Deficit In Equity EquityInConstructionJointVenturesCurrentAssetsExcludingDeficitInEquity	231887000	USD
CY2015	gva	Equity In Net Incomefrom Unconsolidated Joint Venture EquityInNetIncomefromUnconsolidatedJointVenture	-43374000	USD
CY2016	gva	Equity In Net Incomefrom Unconsolidated Joint Venture EquityInNetIncomefromUnconsolidatedJointVenture	-15614000	USD
CY2017	gva	Equity In Net Incomefrom Unconsolidated Joint Venture EquityInNetIncomefromUnconsolidatedJointVenture	14634000	USD
CY2016Q1	gva	Gross Profit As Percentage Of Revenue Net GrossProfitAsPercentageOfRevenueNet	0.089
CY2016Q2	gva	Gross Profit As Percentage Of Revenue Net GrossProfitAsPercentageOfRevenueNet	0.121
CY2016Q3	gva	Gross Profit As Percentage Of Revenue Net GrossProfitAsPercentageOfRevenueNet	0.134
CY2016Q4	gva	Gross Profit As Percentage Of Revenue Net GrossProfitAsPercentageOfRevenueNet	0.122
CY2017Q1	gva	Gross Profit As Percentage Of Revenue Net GrossProfitAsPercentageOfRevenueNet	0.054
CY2017Q2	gva	Gross Profit As Percentage Of Revenue Net GrossProfitAsPercentageOfRevenueNet	0.098
CY2017Q3	gva	Gross Profit As Percentage Of Revenue Net GrossProfitAsPercentageOfRevenueNet	0.120
CY2017Q4	gva	Gross Profit As Percentage Of Revenue Net GrossProfitAsPercentageOfRevenueNet	0.126
CY2015	gva	Impact From Affirmative Claim Recovery Estimate ImpactFromAffirmativeClaimRecoveryEstimate	48500000	USD
CY2016	gva	Impact From Affirmative Claim Recovery Estimate ImpactFromAffirmativeClaimRecoveryEstimate	37300000	USD
CY2017	gva	Impact From Affirmative Claim Recovery Estimate ImpactFromAffirmativeClaimRecoveryEstimate	34900000	USD
CY2015	gva	Impactfromestimatedrecoveryofbackchargeclaims Impactfromestimatedrecoveryofbackchargeclaims	-7000000	USD
CY2016	gva	Impactfromestimatedrecoveryofbackchargeclaims Impactfromestimatedrecoveryofbackchargeclaims	-15700000	USD
CY2017	gva	Impactfromestimatedrecoveryofbackchargeclaims Impactfromestimatedrecoveryofbackchargeclaims	-4600000	USD
CY2015	gva	Large Project Construction LargeProjectConstruction	812720000	USD
CY2016	gva	Large Project Construction LargeProjectConstruction	888193000	USD
CY2017	gva	Large Project Construction LargeProjectConstruction	1032229000	USD
CY2015	gva	Large Project Construction Expense LargeProjectConstructionExpense	733253000	USD
CY2016	gva	Large Project Construction Expense LargeProjectConstructionExpense	824056000	USD
CY2017	gva	Large Project Construction Expense LargeProjectConstructionExpense	1002436000	USD
CY2017	gva	Multiemployer Plans Maximum Percent Funded Status For Red Zone MultiemployerPlansMaximumPercentFundedStatusForRedZone	0.65
CY2017	gva	Multiemployer Plans Maximum Percent Funded Status For Yellow Zone And Minmum Percent For Green Zone MultiemployerPlansMaximumPercentFundedStatusForYellowZoneAndMinmumPercentForGreenZone	0.80
CY2016Q1	gva	Net Income Loss Attributable To Parent As Percent Of Revenue Net NetIncomeLossAttributableToParentAsPercentOfRevenueNet	-0.024
CY2016Q2	gva	Net Income Loss Attributable To Parent As Percent Of Revenue Net NetIncomeLossAttributableToParentAsPercentOfRevenueNet	0.023
CY2016Q3	gva	Net Income Loss Attributable To Parent As Percent Of Revenue Net NetIncomeLossAttributableToParentAsPercentOfRevenueNet	0.046
CY2016Q4	gva	Net Income Loss Attributable To Parent As Percent Of Revenue Net NetIncomeLossAttributableToParentAsPercentOfRevenueNet	0.024
CY2017Q1	gva	Net Income Loss Attributable To Parent As Percent Of Revenue Net NetIncomeLossAttributableToParentAsPercentOfRevenueNet	-0.051
CY2017Q2	gva	Net Income Loss Attributable To Parent As Percent Of Revenue Net NetIncomeLossAttributableToParentAsPercentOfRevenueNet	0.019
CY2017Q3	gva	Net Income Loss Attributable To Parent As Percent Of Revenue Net NetIncomeLossAttributableToParentAsPercentOfRevenueNet	0.048
CY2017Q4	gva	Net Income Loss Attributable To Parent As Percent Of Revenue Net NetIncomeLossAttributableToParentAsPercentOfRevenueNet	0.041
CY2016Q1	gva	Net Income Loss Including Portion Attributable To Noncontrolling Interest As Percent Of Revenue Net NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAsPercentOfRevenueNet	-0.022
CY2016Q2	gva	Net Income Loss Including Portion Attributable To Noncontrolling Interest As Percent Of Revenue Net NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAsPercentOfRevenueNet	0.031
CY2016Q3	gva	Net Income Loss Including Portion Attributable To Noncontrolling Interest As Percent Of Revenue Net NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAsPercentOfRevenueNet	0.047
CY2016Q4	gva	Net Income Loss Including Portion Attributable To Noncontrolling Interest As Percent Of Revenue Net NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAsPercentOfRevenueNet	0.029
CY2017Q1	gva	Net Income Loss Including Portion Attributable To Noncontrolling Interest As Percent Of Revenue Net NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAsPercentOfRevenueNet	-0.051
CY2017Q2	gva	Net Income Loss Including Portion Attributable To Noncontrolling Interest As Percent Of Revenue Net NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAsPercentOfRevenueNet	0.021
CY2017Q3	gva	Net Income Loss Including Portion Attributable To Noncontrolling Interest As Percent Of Revenue Net NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAsPercentOfRevenueNet	0.050
CY2017Q4	gva	Net Income Loss Including Portion Attributable To Noncontrolling Interest As Percent Of Revenue Net NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAsPercentOfRevenueNet	0.044
CY2015	gva	Net Incomefrom Affiliates NetIncomefromAffiliates	-3210000	USD
CY2016	gva	Net Incomefrom Affiliates NetIncomefromAffiliates	-7177000	USD
CY2017	gva	Net Incomefrom Affiliates NetIncomefromAffiliates	-7107000	USD
CY2015	gva	Noncash Activity Increase Decreasein Performance Guarantees NoncashActivityIncreaseDecreaseinPerformanceGuarantees	10306000	USD
CY2016	gva	Noncash Activity Increase Decreasein Performance Guarantees NoncashActivityIncreaseDecreaseinPerformanceGuarantees	-17596000	USD
CY2017	gva	Noncash Activity Increase Decreasein Performance Guarantees NoncashActivityIncreaseDecreaseinPerformanceGuarantees	-5497000	USD
CY2017	gva	Number Of Participants In Non Qualifed Deferred Compensation Plan NumberOfParticipantsInNonQualifedDeferredCompensationPlan	61	participant
CY2017	gva	Paymentontermloan Paymentontermloan	5000000	USD
CY2015	gva	Proceeds From Maturities Of Marketable Securities ProceedsFromMaturitiesOfMarketableSecurities	29260000	USD
CY2016	gva	Proceeds From Maturities Of Marketable Securities ProceedsFromMaturitiesOfMarketableSecurities	50000000	USD
CY2017	gva	Proceeds From Maturities Of Marketable Securities ProceedsFromMaturitiesOfMarketableSecurities	120000000	USD
CY2015	gva	Proceeds From Sale Of Marketable Securities ProceedsFromSaleOfMarketableSecurities	75000000	USD
CY2016	gva	Proceeds From Sale Of Marketable Securities ProceedsFromSaleOfMarketableSecurities	55000000	USD
CY2017	gva	Proceeds From Sale Of Marketable Securities ProceedsFromSaleOfMarketableSecurities	0	USD
CY2015	gva	Restricted Stock Units Issued Net Of Forfeitures RestrictedStockUnitsIssuedNetOfForfeitures	6220000	USD
CY2016	gva	Restricted Stock Units Issued Net Of Forfeitures RestrictedStockUnitsIssuedNetOfForfeitures	21101000	USD
CY2017	gva	Restricted Stock Units Issued Net Of Forfeitures RestrictedStockUnitsIssuedNetOfForfeitures	11505000	USD
CY2015	gva	Restructuring Impairment Charges RestructuringImpairmentCharges	-1044000	USD
CY2016	gva	Restructuring Impairment Charges RestructuringImpairmentCharges	-1000000	USD
CY2017	gva	Restructuring Impairment Charges RestructuringImpairmentCharges	-939000	USD
CY2015	gva	Total Other Income Expense TotalOtherIncomeExpense	-6881000	USD
CY2016	gva	Total Other Income Expense TotalOtherIncomeExpense	4008000	USD
CY2017	gva	Total Other Income Expense TotalOtherIncomeExpense	5748000	USD
CY2016Q4	gva	Unconsolidated Joint Venture Backchargesclaims UnconsolidatedJointVentureBackchargesclaims	5600000	USD
CY2017Q4	gva	Unconsolidated Joint Venture Backchargesclaims UnconsolidatedJointVentureBackchargesclaims	11800000	USD
CY2016Q4	us-gaap	Accounts Notes And Loans Receivable Net Current AccountsNotesAndLoansReceivableNetCurrent	419345000	USD
CY2017Q4	us-gaap	Accounts Notes And Loans Receivable Net Current AccountsNotesAndLoansReceivableNetCurrent	479791000	USD
CY2016Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	199029000	USD
CY2017Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	237673000	USD
CY2016Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	373038000	USD
CY2017Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	420737000	USD
CY2016Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	44471000	USD
CY2017Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	39946000	USD
CY2016Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	774933000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	801723000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-371000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	634000	USD
CY2016Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	150337000	USD
CY2017Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	160376000	USD
CY2015	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2200000	USD
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2000000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1700000	USD
CY2015Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	26558000	USD
CY2016Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	21936000	USD
CY2017Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	22527000	USD
CY2016	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	1242000	USD
CY2017	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	1095000	USD
CY2016Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	1900000	USD
CY2017Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	4800000	USD
CY2016	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	3806000	USD
CY2017	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	966000	USD
CY2015	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	200000	USD
CY2016	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	2058000	USD
CY2017	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	462000	USD
CY2016Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	20100000	USD
CY2017Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	17700000	USD
CY2015Q4	us-gaap	Assets Assets	1626878000	USD
CY2016Q4	us-gaap	Assets Assets	1733453000	USD
CY2017Q4	us-gaap	Assets Assets	1871978000	USD
CY2016Q4	us-gaap	Assets Current AssetsCurrent	1088992000	USD
CY2017Q4	us-gaap	Assets Current AssetsCurrent	1232078000	USD
CY2016Q4	us-gaap	Billings In Excess Of Cost BillingsInExcessOfCost	97522000	USD
CY2017Q4	us-gaap	Billings In Excess Of Cost BillingsInExcessOfCost	135146000	USD
CY2015	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	2300000	USD
CY2016	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	6600000	USD
CY2017	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	7900000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	255961000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	252836000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	189326000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	233711000	USD
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-3125000	USD
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-63510000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	44385000	USD
CY2016Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2015	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.52
CY2016	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.52
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.52
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	150000000	shares
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2016Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	39621140	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	39871314	shares
CY2016Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	39621140	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	39871314	shares
CY2016Q4	us-gaap	Common Stock Value CommonStockValue	396000	USD
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	399000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	59413000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	58251000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	70103000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	67176000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	67329000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	76806000	USD
CY2015	us-gaap	Contract Revenue Cost ContractRevenueCost	1075169000	USD
CY2016	us-gaap	Contract Revenue Cost ContractRevenueCost	1155983000	USD
CY2017	us-gaap	Contract Revenue Cost ContractRevenueCost	1417694000	USD
CY2015	us-gaap	Contracts Revenue ContractsRevenue	1262675000	USD
CY2016	us-gaap	Contracts Revenue ContractsRevenue	1365198000	USD
CY2017	us-gaap	Contracts Revenue ContractsRevenue	1664708000	USD
CY2015	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2071193000	USD
CY2016	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2213247000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2674780000	USD
CY2015	us-gaap	Cost Of Goods Sold CostOfGoodsSold	262771000	USD
CY2016	us-gaap	Cost Of Goods Sold CostOfGoodsSold	233208000	USD
CY2017	us-gaap	Cost Of Goods Sold CostOfGoodsSold	254650000	USD
CY2016Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear	73102000	USD
CY2017Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear	103965000	USD
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	4810000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	15657000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	27877000	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1914000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4567000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5520000	USD
CY2016Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	244294000	USD
CY2017Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	224501000	USD
CY2016Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	21500000	USD
CY2017Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	24700000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	25955000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	9919000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-4397000	USD
CY2016Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	49484000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	24571000	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2500000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	19000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-338000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	2212000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	1513000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	44043000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	23210000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	2341000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	2614000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2481000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1379000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	11031000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	1738000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	12740000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	8985000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	2294000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	1525000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1185000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	641000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2153000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2471000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	5441000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	1361000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	29400000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	16832000	USD
CY2015	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	5400000	USD
CY2016	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	11000000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	12100000	USD
CY2017	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2017	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	0.50
CY2015	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	64309000	USD
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	64375000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	66345000	USD
CY2016Q4	us-gaap	Derivative Assets DerivativeAssets	800000	USD
CY2017Q4	us-gaap	Derivative Assets DerivativeAssets	1400000	USD
CY2015	us-gaap	Dividends Dividends	5124000	USD
CY2016	us-gaap	Dividends Dividends	5151000	USD
CY2017	us-gaap	Dividends Dividends	5183000	USD
CY2015	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	20476000	USD
CY2016	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	20590000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	20720000	USD
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.54
CY2016Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.27
CY2016Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.36
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.94
CY2016Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.41
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.44
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.60
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.35
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.15
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.82
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.74
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.52
CY2016Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.27
CY2016Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.35
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.92
CY2016Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.40
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.42
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.60
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.35
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.14
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.81
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.71
CY2015	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.340
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.313
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.274
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.340
CY2016	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	0.350
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.003
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.017
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.027
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.026
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.033
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.023
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.002
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.011
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.011
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.014
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.014
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.013
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.005
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.015
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.026
CY2015	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.036
CY2016	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.031
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.037
CY2016Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	53802000	USD
CY2017Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	68210000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y2M12D
CY2017Q4	us-gaap	Employee Stock Ownership Plan Esop Shares In Esop EmployeeStockOwnershipPlanESOPSharesInESOP	1454844	shares
CY2015	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	53367000	USD
CY2016	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	19344000	USD
CY2017	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	39955000	USD
CY2015	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	30765000	USD
CY2016	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	25576000	USD
CY2017	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	23480000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	15911000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	16156000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	9700000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	1700000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1400000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	1600000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	1700000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	33809000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	32309000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	17898000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	16153000	USD
CY2015	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	8286000	USD
CY2016	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	8358000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	4182000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	53799000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	53799000	USD
CY2015	us-gaap	Gross Profit GrossProfit	299836000	USD
CY2016Q1	us-gaap	Gross Profit GrossProfit	39245000	USD
CY2016Q2	us-gaap	Gross Profit GrossProfit	73201000	USD
CY2016Q3	us-gaap	Gross Profit GrossProfit	107674000	USD
CY2016Q4	us-gaap	Gross Profit GrossProfit	81250000	USD
CY2016	us-gaap	Gross Profit GrossProfit	301370000	USD
CY2017Q1	us-gaap	Gross Profit GrossProfit	25126000	USD
CY2017Q2	us-gaap	Gross Profit GrossProfit	74570000	USD
CY2017Q3	us-gaap	Gross Profit GrossProfit	114530000	USD
CY2017Q4	us-gaap	Gross Profit GrossProfit	100707000	USD
CY2017	us-gaap	Gross Profit GrossProfit	314933000	USD
CY2016Q4	us-gaap	Guaranty Liabilities GuarantyLiabilities	83110000	USD
CY2017Q4	us-gaap	Guaranty Liabilities GuarantyLiabilities	88606000	USD
CY2017Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	132790000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	65015000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	67775000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	103427000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	96362000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	104463000	USD
CY2015	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	3210000	USD
CY2016	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	7177000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	7107000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35179000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30162000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	28662000	USD
CY2015	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	306000	USD
CY2016	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	1624000	USD
CY2017	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	2765000	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	35165000	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	33728000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	36562000	USD
CY2015	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	2639000	USD
CY2016	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	3177000	USD
CY2017	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	2346000	USD
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	219000	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1094000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1128000	USD
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-1444000	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-1352000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-1368000	USD
CY2015	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	415000	USD
CY2016	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-1497000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-2699000	USD
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3769000	USD
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2990000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3814000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	4298000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	29872000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	33948000	USD
CY2015	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	32877000	USD
CY2016	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	75756000	USD
CY2017	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	60272000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	8363000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	37731000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	36716000	USD
CY2015	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-28258000	USD
CY2016	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-9842000	USD
CY2017	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	4824000	USD
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-13367000	USD
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-308000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	7252000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1078000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	13873000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-13211000	USD
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	531000	shares
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	668000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	577000	shares
CY2015	us-gaap	Interest Expense InterestExpense	14257000	USD
CY2016	us-gaap	Interest Expense InterestExpense	12366000	USD
CY2017	us-gaap	Interest Expense InterestExpense	10800000	USD
CY2015	us-gaap	Interest Paid Net InterestPaidNet	14601000	USD
CY2016	us-gaap	Interest Paid Net InterestPaidNet	13392000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	11446000	USD
CY2016Q4	us-gaap	Inventory Net InventoryNet	55245000	USD
CY2017Q4	us-gaap	Inventory Net InventoryNet	62497000	USD
CY2016Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	5000000	USD
CY2017Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	11900000	USD
CY2015	us-gaap	Investment Income Interest InvestmentIncomeInterest	2135000	USD
CY2016	us-gaap	Investment Income Interest InvestmentIncomeInterest	3225000	USD
CY2017	us-gaap	Investment Income Interest InvestmentIncomeInterest	4742000	USD
CY2015Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	33182000	USD
CY2016Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	35668000	USD
CY2017Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	38469000	USD
CY2015	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	11300000	USD
CY2016	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	18200000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	16400000	USD
CY2017Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	8300000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1733453000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1871978000	USD
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	529934000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	655274000	USD
CY2017Q4	us-gaap	Line Of Credit LineOfCredit	290000000	USD
CY2017	us-gaap	Line Of Credit Facility Covenant Compliance LineOfCreditFacilityCovenantCompliance	We were in compliance with the covenants contained in our senior note agreements and Credit Agreement.
CY2016Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	14796000	USD
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	46048000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	46300000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	0	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	128800000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	50000000	USD
CY2016Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	229498000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	178453000	USD
CY2016Q4	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	4300000	USD
CY2017Q4	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	900000	USD
CY2016Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	64884000	USD
CY2017Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	67775000	USD
CY2016Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	62895000	USD
CY2017Q4	us-gaap	Minority Interest MinorityInterest	47697000	USD
CY2017Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	65015000	USD
CY2016Q4	us-gaap	Minority Interest MinorityInterest	36603000	USD
CY2015	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	400000	USD
CY2016	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	3359000	USD
CY2017	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	4391000	USD
CY2015	us-gaap	Multiemployer Plan Contributions By Employer MultiemployerPlanContributionsByEmployer	28559000	USD
CY2016	us-gaap	Multiemployer Plan Contributions By Employer MultiemployerPlanContributionsByEmployer	33082000	USD
CY2017	us-gaap	Multiemployer Plan Contributions By Employer MultiemployerPlanContributionsByEmployer	36784000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-39396000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-40266000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-42624000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-30707000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-96390000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-59186000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	66978000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	73146000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	146195000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	60485000	USD
CY2016Q1	us-gaap	Net Income Loss NetIncomeLoss	-10440000	USD
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	14199000	USD
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	37190000	USD
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	16173000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	57122000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	-23790000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	14133000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	45982000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	32773000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	69098000	USD
CY2015	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7763000	USD
CY2016	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	9078000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6703000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	110308000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	92354000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	98715000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	47951000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	12169000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	4794000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	6874000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	7997000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	8946000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	7171000	USD
CY2016Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	37204000	USD
CY2017Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	39645000	USD
CY2016Q4	us-gaap	Other Assets Current OtherAssetsCurrent	39908000	USD
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	36513000	USD
CY2016Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	85449000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	75199000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	0	USD
CY2016	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	503000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	350000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1072000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1129000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1005000	USD
CY2016Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	45989000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	44085000	USD
CY2015	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2031000	USD
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	5972000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4699000	USD
CY2015	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-92000	USD
CY2016	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1988000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1798000	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3777000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	5227000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	6977000	USD
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	20445000	USD
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	20563000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	20687000	USD
CY2015	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	104971000	USD
CY2016	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	129685000	USD
CY2017	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	124543000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	44179000	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	90970000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	67695000	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	3000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	3000000	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 Outstanding PreferredStockValueOutstanding	0	USD
CY2017Q4	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	0	USD
CY2015	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	943000	USD
CY2016	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	4331000	USD
CY2017	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	1052000	USD
CY2015	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	30000000	USD
CY2016	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	30000000	USD
CY2017	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	25000000	USD
CY2015	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	1119000	USD
CY2016	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	557000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	649000	USD
CY2015	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	13148000	USD
CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	12946000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	10202000	USD
CY2015	us-gaap	Profit Loss ProfitLoss	68248000	USD
CY2016Q1	us-gaap	Profit Loss ProfitLoss	-9762000	USD
CY2016Q2	us-gaap	Profit Loss ProfitLoss	18526000	USD
CY2016Q3	us-gaap	Profit Loss ProfitLoss	38172000	USD
CY2016Q4	us-gaap	Profit Loss ProfitLoss	19264000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	66200000	USD
CY2017Q1	us-gaap	Profit Loss ProfitLoss	-23851000	USD
CY2017Q2	us-gaap	Profit Loss ProfitLoss	16272000	USD
CY2017Q3	us-gaap	Profit Loss ProfitLoss	48055000	USD
CY2017Q4	us-gaap	Profit Loss ProfitLoss	35325000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	75801000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1181583000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1209141000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	406650000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	407418000	USD
CY2015	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	46763000	USD
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	45025000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	45000000	USD
CY2015	us-gaap	Restricted Stock Expense RestrictedStockExpense	8763000	USD
CY2016	us-gaap	Restricted Stock Expense RestrictedStockExpense	13383000	USD
CY2017	us-gaap	Restricted Stock Expense RestrictedStockExpense	15764000	USD
CY2015	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	-6003000	USD
CY2016	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	-1925000	USD
CY2017	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	-2411000	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	735626000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	783699000	USD
CY2015	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	295634000	USD
CY2016	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	261226000	USD
CY2017	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	292776000	USD
CY2015	us-gaap	Sales Revenue Net SalesRevenueNet	2371029000	USD
CY2016Q1	us-gaap	Sales Revenue Net SalesRevenueNet	439452000	USD
CY2016Q2	us-gaap	Sales Revenue Net SalesRevenueNet	604579000	USD
CY2016Q3	us-gaap	Sales Revenue Net SalesRevenueNet	803905000	USD
CY2016Q4	us-gaap	Sales Revenue Net SalesRevenueNet	666681000	USD
CY2016	us-gaap	Sales Revenue Net SalesRevenueNet	2514617000	USD
CY2017Q1	us-gaap	Sales Revenue Net SalesRevenueNet	468400000	USD
CY2017Q2	us-gaap	Sales Revenue Net SalesRevenueNet	762913000	USD
CY2017Q3	us-gaap	Sales Revenue Net SalesRevenueNet	957126000	USD
CY2017Q4	us-gaap	Sales Revenue Net SalesRevenueNet	801274000	USD
CY2017	us-gaap	Sales Revenue Net SalesRevenueNet	2989713000	USD
CY2015	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	203817000	USD
CY2016	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	219299000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	222811000	USD
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	8763000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	13383000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	15764000	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	1595675	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	1072750	shares
CY2015	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	4414000	USD
CY2016	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	4586000	USD
CY2017	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	5182000	USD
CY2015	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	22567	shares
CY2016	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	16717	shares
CY2017	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	16413	shares
CY2017	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	800000	USD
CY2015	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3000	USD
CY2016	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4000	USD
CY2017Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	200000000	USD
CY2015	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	3856000	USD
CY2016	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	5227000	USD
CY2017	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	6977000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	885988000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	945108000	USD
CY2014Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	817106000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	870121000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	922591000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	992805000	USD
CY2015	us-gaap	Stockholders Equity Other StockholdersEquityOther	1005000	USD
CY2016	us-gaap	Stockholders Equity Other StockholdersEquityOther	931000	USD
CY2017	us-gaap	Stockholders Equity Other StockholdersEquityOther	946000	USD
CY2015	us-gaap	Translation Adjustment Functional To Reporting Currency Net Of Tax Period Increase Decrease TranslationAdjustmentFunctionalToReportingCurrencyNetOfTaxPeriodIncreaseDecrease	-1072000	USD
CY2016	us-gaap	Translation Adjustment Functional To Reporting Currency Net Of Tax Period Increase Decrease TranslationAdjustmentFunctionalToReportingCurrencyNetOfTaxPeriodIncreaseDecrease	626000	USD
CY2017	us-gaap	Translation Adjustment Functional To Reporting Currency Net Of Tax Period Increase Decrease TranslationAdjustmentFunctionalToReportingCurrencyNetOfTaxPeriodIncreaseDecrease	655000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3300000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3200000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	200000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	400000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-100000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	100000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-200000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3200000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3100000	USD
CY2015	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-544000	USD
CY2016	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	1512000	USD
CY2017	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	318000	USD
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39868000	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	40225000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	40372000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39337000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39795000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39557000	shares
CY2017	us-gaap	Guarantees Indemnifications And Warranties Policies GuaranteesIndemnificationsAndWarrantiesPolicies	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:8px;text-align:left;padding-left:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Warranties: </font><font style="font-family:inherit;font-size:10pt;">Many of our construction contracts contain warranty provisions covering defects in equipment, materials, design or workmanship that generally run from six months to one year after our customer accepts the contract. Because of the nature of our projects, including contract owner inspections of the work both during construction and prior to acceptance, we have not experienced material warranty costs for these short-term warranties and, therefore, do not believe an accrual for these costs is necessary. Certain construction contracts carry longer warranty periods, ranging from two to ten years, for which we have accrued an estimate of warranty cost. The warranty liability is estimated based on our experience with the type of work and any known risks relative to the project and was not material as of December 31, </font><font style="font-family:inherit;font-size:10pt;">2017</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">2016</font><font style="font-family:inherit;font-size:10pt;">. </font></div></div><div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:8px;text-align:left;padding-left:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Performance Guarantees: </font><font style="font-family:inherit;font-size:10pt;">Agreements with our joint venture partners (“partner(s)”) for both construction joint ventures and line item joint ventures define each partner’s management role and financial responsibility in the project. The amount of operational exposure is generally limited to our stated ownership interest. However, due to the joint and several nature of the performance obligations under the related owner contracts, if one of the partners fails to perform, we and the remaining partners, if any, would be responsible for performance of the outstanding work (i.e., we provide a performance guarantee). We estimate our liability for performance guarantees for our unconsolidated construction joint ventures and line item joint ventures using estimated partner bond rates and include them in accrued expenses and other current liabilities (see Note 10) with a corresponding increase in equity in construction joint ventures in the consolidated balance sheets. We reassess our liability when and if changes in circumstances occur. The liability and corresponding asset are removed from the consolidated balance sheets upon customer acceptance of the project. Circumstances that could lead to a loss under these agreements beyond our stated ownership interest include the failure of a partner to contribute additional funds to the venture in the event the project incurs a loss or additional costs that we could incur should a partner fail to provide the services and resources that it had committed to provide in the agreement.</font></div></div>
CY2017	us-gaap	Revenue Recognition Percentage Of Completion Method RevenueRecognitionPercentageOfCompletionMethod	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:8px;text-align:left;padding-left:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Revenue Recognition - Construction Contracts: </font><font style="font-family:inherit;font-size:10pt;">Revenue and earnings on construction contracts, including construction joint ventures, are recognized under the percentage of completion method using the ratio of costs incurred to estimated total costs. </font></div><div style="line-height:120%;padding-bottom:8px;padding-left:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Revenue from unapproved change orders is recognized to the extent the related costs have been incurred, the amount can be reliably estimated and recovery is probable. </font></div><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-align:left;padding-left:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">On certain projects we have submitted and have pending unresolved contract modifications and affirmative claims (“affirmative claims”) to recover additional costs to which the Company believes it is entitled under the terms of contracts with customers, subcontractors, vendors or others. The owners or their authorized representatives and/or other third parties may be in partial or full agreement with the modifications or affirmative claims, or may have rejected or disagree entirely or partially as to such entitlement. </font></div><div style="line-height:120%;padding-bottom:8px;padding-left:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Revenue related to affirmative claims with customers is recognized to the extent of costs incurred when it is probable that a claim settlement with a customer will result in additional revenue and the amount can be reasonably estimated. A reduction to costs related to affirmative claims with non-customers with whom we have a contractual arrangement (“back charges”) is recognized when the estimated recovery is probable and the amount can be reasonably estimated. Except for contractual back charges, a reduction to cost related to affirmative claims against non-customers is recognized when the claims are settled. Recognizing affirmative claims and back charge recoveries requires significant judgments of certain factors including, but not limited to, dispute resolution developments and outcomes, anticipated negotiation results, and the cost of resolving such matters. </font></div><div style="line-height:120%;padding-bottom:8px;padding-left:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Provisions are recognized in the consolidated statements of operations for the full amount of estimated losses on uncompleted contracts whenever evidence indicates that the estimated total cost of a contract exceeds its estimated total revenue. All contract costs, including those associated with affirmative claims, back charges and change orders, are recorded as incurred and revisions to estimated total costs are reflected as soon as the obligation to perform is determined. Contract costs consist of direct costs on contracts, including labor and materials, amounts payable to subcontractors, direct overhead costs and equipment expense (primarily depreciation, fuel, maintenance and repairs). All state and federal government contracts and many of our other contracts provide for termination of the contract at the convenience of the party contracting with us, with provisions to pay us for work performed through the date of termination. Pre-contract costs are expensed as incurred.</font></div><div style="line-height:120%;padding-bottom:8px;padding-left:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The accuracy of our revenue and profit recognition in a given period depends on the accuracy of our estimates of the cost to complete each project. Cost estimates for all of our projects use a detailed “bottom up” approach and we believe our experience allows us to create materially reliable estimates. There are a number of factors that can contribute to changes in estimates of contract cost and profitability. The most significant of these include:</font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">the completeness and accuracy of the original bid;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">costs associated with scope changes;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">changes in costs of labor and/or materials;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">extended overhead and other costs due to owner, weather and other delays;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">subcontractor performance issues;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">changes in productivity expectations;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">site conditions that differ from those assumed in the original bid;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">changes from original design on design-build projects; </font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">the availability and skill level of workers in the geographic location of the project;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">a change in the availability and proximity of equipment and materials;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">our ability to fully and promptly recover on affirmative claims and back charges for additional contract costs; and</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-bottom:8px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">the customer’s ability to properly administer the contract.</font></div></td></tr></table><div style="line-height:120%;padding-bottom:8px;text-align:left;padding-left:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The foregoing factors, as well as the stage of completion of contracts in process and the mix of contracts at different margins may cause fluctuations in gross profit and gross profit margin from period to period. Significant changes in cost estimates, particularly in our larger, more complex projects have had, and can in future periods have, a significant effect on our profitability.</font></div></div>
CY2017	us-gaap	Revenue Recognition Sales Of Goods RevenueRecognitionSalesOfGoods	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:8px;text-align:left;padding-left:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Revenue Recognition - Materials: </font><font style="font-family:inherit;font-size:10pt;">Revenue from the sale of materials is recognized when delivery occurs and risk of ownership passes to the customer.</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-bottom:8px;text-align:left;padding-left:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Use of Estimates in the Preparation of Financial Statements</font><font style="font-family:inherit;font-size:10pt;">: The financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).  The preparation of these financial statements requires management to make estimates that affect the reported amounts of assets and liabilities, revenue and expenses, and related disclosure of contingent assets and liabilities. Our estimates and related judgments and assumptions are continually evaluated based on available information and experiences; however, actual amounts could differ from those estimates.</font></div></div>

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GRANITE CONSTRUCTION INC Stock $gva

2017 Q4 Form 10-K Financial Statement

#000086145918000008 Filed on February 16, 2018

Income Statement

Balance Sheet

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Files In Submission

$GVA GRANITE CONSTRUCTION INC Stock $gva

2017 Q4 Form 10-K Financial Statement

#000086145918000008 Filed on February 16, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GVA
GRANITE CONSTRUCTION INC Stock $gva