$AMRC
Ameresco, Inc. Stock $amrc

$amrc Overview Financials Valuation SEC Filings Company Website

2017 Q4 Form 10-K Financial Statement

#000148813918000015 Filed on March 07, 2018

Income Statement

Concept	2017 Q4	2017 Q3	2017 Q2
Revenue	$211.1M	$204.7M	$166.7M
YoY Change	21.18%	13.37%	2.48%
Cost Of Revenue	$169.7M	$163.4M	$131.3M
YoY Change	22.79%	15.21%	0.37%
Gross Profit	$41.46M	$41.37M	$35.41M
YoY Change	15.11%	6.63%	11.15%
Gross Profit Margin	19.64%	20.2%	21.25%
Selling, General & Admin	$27.10M	$26.70M	$26.30M
YoY Change	-0.73%	-5.65%	-1.13%
% of Gross Profit	65.37%	64.54%	74.28%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$6.660M	$6.186M	$5.659M
YoY Change	1.99%	6.62%	2.37%
% of Gross Profit	16.06%	14.95%	15.98%
Operating Expenses	$27.40M	$27.03M	$26.65M
YoY Change	-4.53%	-6.33%	-1.81%
Operating Profit	$14.06M	$14.34M	$8.758M
YoY Change	92.14%	44.22%	85.71%
Interest Expense	-$2.600M	$2.791M	$2.271M
YoY Change	8.33%	47.91%	29.03%
% of Operating Profit	-18.49%	19.46%	25.93%
Other Income/Expense, Net		-$1.668M	-$1.738M
YoY Change		-26.46%	-6.05%
Pretax Income	$11.40M	$12.67M	$7.020M
YoY Change	132.65%	65.11%	144.94%
Income Tax	$4.900M	$3.881M	$1.060M
% Of Pretax Income	42.98%	30.63%	15.1%
Net Earnings	$23.81M	$8.493M	$5.831M
YoY Change	628.39%	48.61%	192.43%
Net Earnings / Revenue	11.28%	4.15%	3.5%
Basic Earnings Per Share	$0.52	$0.19	$0.13
Diluted Earnings Per Share	$0.52	$0.19	$0.13
COMMON SHARES
Basic Shares Outstanding	45.54M shares	45.52M shares	45.46M shares
Diluted Shares Outstanding	45.96M shares	45.77M shares	45.68M shares

Balance Sheet

Concept	2017 Q4	2017 Q3	2017 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$24.30M	$29.60M	$27.10M
YoY Change	17.96%	60.87%	77.12%
Cash & Equivalents	$24.26M	$29.56M	$27.13M
Short-Term Investments
Other Short-Term Assets	$146.0M	$124.8M	$93.80M
YoY Change	62.04%	21.99%	-15.72%
Inventory	$8.139M	$8.602M	$9.479M
Prepaid Expenses	$14.04M	$13.84M	$10.61M
Receivables	$102.6M	$81.70M	$86.00M
Other Receivables	$6.100M	$500.0K	$500.0K
Total Short-Term Assets	$287.1M	$245.2M	$216.9M
YoY Change	26.99%	3.65%	-10.89%
LONG-TERM ASSETS
Property, Plant & Equipment	$5.303M	$4.830M	$4.699M
YoY Change	5.68%	-14.32%	-20.64%
Goodwill	$56.14M	$56.11M	$55.78M
YoY Change	-3.18%	-3.86%	-4.84%
Intangibles	$2.440M	$2.801M	$3.113M
YoY Change	-37.93%	-39.31%	-41.06%
Long-Term Investments
YoY Change
Other Assets	$27.64M	$27.07M	$25.20M
YoY Change	4.96%	9.32%	10.59%
Total Long-Term Assets	$696.9M	$658.4M	$658.9M
YoY Change	22.0%	32.34%	37.0%
TOTAL ASSETS
Total Short-Term Assets	$287.1M	$245.2M	$216.9M
Total Long-Term Assets	$696.9M	$658.4M	$658.9M
Total Assets	$984.0M	$903.6M	$875.9M
YoY Change	23.41%	23.1%	20.91%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$135.9M	$122.7M	$102.5M
YoY Change	7.35%	-1.83%	-9.24%
Accrued Expenses	$23.26M	$23.20M	$21.15M
YoY Change	2.18%	3.57%	-2.66%
Deferred Revenue	$19.87M
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$22.38M	$24.16M	$22.27M
YoY Change	15.98%	58.43%	49.63%
Total Short-Term Liabilities	$202.1M	$190.7M	$168.0M
YoY Change	6.05%	4.78%	-2.61%
LONG-TERM LIABILITIES
Long-Term Debt	$173.2M	$178.1M	$172.7M
YoY Change	23.22%	56.82%	64.87%
Other Long-Term Liabilities	$18.75M	$16.67M	$16.34M
YoY Change	23.76%	-21.12%	-23.97%
Total Long-Term Liabilities	$192.0M	$194.8M	$189.1M
YoY Change	23.27%	44.6%	49.75%
TOTAL LIABILITIES
Total Short-Term Liabilities	$202.1M	$190.7M	$168.0M
Total Long-Term Liabilities	$192.0M	$194.8M	$189.1M
Total Liabilities	$394.1M	$385.5M	$357.1M
YoY Change	13.8%	21.71%	19.51%
SHAREHOLDERS EQUITY
Retained Earnings	$235.8M	$212.0M	$203.5M
YoY Change	21.35%	9.74%	8.55%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)	$9.799M	$9.416M	$8.656M
YoY Change	53.42%	111.55%	344.13%
Treasury Stock Shares	1.873M shares
Shareholders Equity	$336.6M	$312.0M	$303.2M
YoY Change
Total Liabilities & Shareholders Equity	$984.0M	$903.6M	$875.9M
YoY Change	23.41%	23.1%	20.91%

Cashflow Statement

Concept	2017 Q4	2017 Q3	2017 Q2
OPERATING ACTIVITIES
Net Income	$23.81M	$8.493M	$5.831M
YoY Change	628.39%	48.61%	192.43%
Depreciation, Depletion And Amortization	$6.660M	$6.186M	$5.659M
YoY Change	1.99%	6.62%	2.37%
Cash From Operating Activities	-$45.14M	-$39.01M	-$19.41M
YoY Change	322.26%	409.27%	-21.26%
INVESTING ACTIVITIES
Capital Expenditures	-$17.75M	-$18.04M	-$23.11M
YoY Change	-36.92%	-27.46%	65.9%
Acquisitions
YoY Change
Other Investing Activities	$0.00	$0.00	$0.00
YoY Change	-100.0%
Cash From Investing Activities	-$17.75M	-$18.03M	-$23.12M
YoY Change	-44.04%	-27.5%	65.97%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	57.92M	59.44M	48.27M
YoY Change	30.27%	66.83%	27.97%
NET CHANGE
Cash From Operating Activities	-45.14M	-39.01M	-19.41M
Cash From Investing Activities	-17.75M	-18.03M	-23.12M
Cash From Financing Activities	57.92M	59.44M	48.27M
Net Change In Cash	-4.970M	2.400M	5.740M
YoY Change	-342.44%	-22.58%	-767.44%
FREE CASH FLOW
Cash From Operating Activities	-$45.14M	-$39.01M	-$19.41M
Capital Expenditures	-$17.75M	-$18.04M	-$23.11M
Free Cash Flow	-$27.39M	-$20.97M	$3.700M
YoY Change	-256.96%	-221.85%	-134.51%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2015	amrc	Allowance For Doubtful Accounts Receivable Charge Offs And Other AllowanceForDoubtfulAccountsReceivableChargeOffsAndOther	573000	USD
CY2016	amrc	Allowance For Doubtful Accounts Receivable Charge Offs And Other AllowanceForDoubtfulAccountsReceivableChargeOffsAndOther	225000	USD
CY2017	amrc	Allowance For Doubtful Accounts Receivable Charge Offs And Other AllowanceForDoubtfulAccountsReceivableChargeOffsAndOther	4602000	USD
CY2017Q1	amrc	Business Combination Number Of Projects Acquired BusinessCombinationNumberOfProjectsAcquired	2	project
CY2016Q4	amrc	Capitalized Project Development Costs Noncurrent CapitalizedProjectDevelopmentCostsNoncurrent	1524000	USD
CY2017Q4	amrc	Capitalized Project Development Costs Noncurrent CapitalizedProjectDevelopmentCostsNoncurrent	2355000	USD
CY2015	amrc	Contracts Receivable Retainage Allowancesand Reserves ContractsReceivableRetainageAllowancesandReserves	1282000	USD
CY2016	amrc	Contracts Receivable Retainage Allowancesand Reserves ContractsReceivableRetainageAllowancesandReserves	887000	USD
CY2017	amrc	Contracts Receivable Retainage Allowancesand Reserves ContractsReceivableRetainageAllowancesandReserves	0	USD
CY2017Q4	amrc	Deferred Financing Costs Amortization Next Twelve Months DeferredFinancingCostsAmortizationNextTwelveMonths	1507000	USD
CY2017Q4	amrc	Deferred Financing Costs Amortization Year Five DeferredFinancingCostsAmortizationYearFive	479000	USD
CY2017Q4	amrc	Deferred Financing Costs Amortization Year Four DeferredFinancingCostsAmortizationYearFour	565000	USD
CY2017Q4	amrc	Deferred Financing Costs Amortization Year Three DeferredFinancingCostsAmortizationYearThree	828000	USD
CY2017Q4	amrc	Deferred Financing Costs Amortization Year Two DeferredFinancingCostsAmortizationYearTwo	1340000	USD
CY2015	amrc	Deferred Income Tax Expense Benefit Excluding Effects Of Exchange Rates On Cash DeferredIncomeTaxExpenseBenefitExcludingEffectsOfExchangeRatesOnCash	4086000	USD
CY2016	amrc	Deferred Income Tax Expense Benefit Excluding Effects Of Exchange Rates On Cash DeferredIncomeTaxExpenseBenefitExcludingEffectsOfExchangeRatesOnCash	2867000	USD
CY2017	amrc	Deferred Income Tax Expense Benefit Excluding Effects Of Exchange Rates On Cash DeferredIncomeTaxExpenseBenefitExcludingEffectsOfExchangeRatesOnCash	-4527000	USD
CY2016Q4	amrc	Deferred Tax Assets Deferred Revenue DeferredTaxAssetsDeferredRevenue	1351000	USD
CY2017Q4	amrc	Deferred Tax Assets Deferred Revenue DeferredTaxAssetsDeferredRevenue	815000	USD
CY2016Q4	amrc	Deferred Tax Assets Derivative Instruments Net DeferredTaxAssetsDerivativeInstrumentsNet	859000	USD
CY2017Q4	amrc	Deferred Tax Assets Derivative Instruments Net DeferredTaxAssetsDerivativeInstrumentsNet	401000	USD
CY2016Q4	amrc	Deferred Tax Liabilities Acquisition Accounting DeferredTaxLiabilitiesAcquisitionAccounting	80000	USD
CY2017Q4	amrc	Deferred Tax Liabilities Acquisition Accounting DeferredTaxLiabilitiesAcquisitionAccounting	0	USD
CY2016Q4	amrc	Deferred Tax Liabilities Contract Refinancing DeferredTaxLiabilitiesContractRefinancing	217000	USD
CY2017Q4	amrc	Deferred Tax Liabilities Contract Refinancing DeferredTaxLiabilitiesContractRefinancing	0	USD
CY2016Q4	amrc	Deferred Tax Liabilities Outside Basis Difference DeferredTaxLiabilitiesOutsideBasisDifference	2756000	USD
CY2017Q4	amrc	Deferred Tax Liabilities Outside Basis Difference DeferredTaxLiabilitiesOutsideBasisDifference	4408000	USD
CY2017	amrc	Earningswith No Repatriation Tax EarningswithNoRepatriationTax	0	USD
CY2015	amrc	Effective Income Tax Rate Reconciliation Energy Efficiency Preferences EffectiveIncomeTaxRateReconciliationEnergyEfficiencyPreferences	-11.233
CY2016	amrc	Effective Income Tax Rate Reconciliation Energy Efficiency Preferences EffectiveIncomeTaxRateReconciliationEnergyEfficiencyPreferences	-0.252
CY2017	amrc	Effective Income Tax Rate Reconciliation Energy Efficiency Preferences EffectiveIncomeTaxRateReconciliationEnergyEfficiencyPreferences	-0.223
CY2015	amrc	Effective Income Tax Rate Reconciliation Partnership Basis Adjustment EffectiveIncomeTaxRateReconciliationPartnershipBasisAdjustment	2133000	USD
CY2016	amrc	Effective Income Tax Rate Reconciliation Partnership Basis Adjustment EffectiveIncomeTaxRateReconciliationPartnershipBasisAdjustment	0	USD
CY2017	amrc	Effective Income Tax Rate Reconciliation Partnership Basis Adjustment EffectiveIncomeTaxRateReconciliationPartnershipBasisAdjustment	0	USD
CY2015	amrc	Effective Income Tax Rate Reconciliation Partnership Basis Adjustment Percent EffectiveIncomeTaxRateReconciliationPartnershipBasisAdjustmentPercent	7.305
CY2016	amrc	Effective Income Tax Rate Reconciliation Partnership Basis Adjustment Percent EffectiveIncomeTaxRateReconciliationPartnershipBasisAdjustmentPercent	0.000
CY2017	amrc	Effective Income Tax Rate Reconciliation Partnership Basis Adjustment Percent EffectiveIncomeTaxRateReconciliationPartnershipBasisAdjustmentPercent	0.000
CY2015	amrc	Effective Income Tax Rate Reconciliation Reservefor Uncertain Tax Positions Amount EffectiveIncomeTaxRateReconciliationReserveforUncertainTaxPositionsAmount	-1772000	USD
CY2016	amrc	Effective Income Tax Rate Reconciliation Reservefor Uncertain Tax Positions Amount EffectiveIncomeTaxRateReconciliationReserveforUncertainTaxPositionsAmount	-411000	USD
CY2017	amrc	Effective Income Tax Rate Reconciliation Reservefor Uncertain Tax Positions Amount EffectiveIncomeTaxRateReconciliationReserveforUncertainTaxPositionsAmount	42000	USD
CY2015	amrc	Effective Income Tax Rate Reconciliation Reservefor Uncertain Tax Positions Percent EffectiveIncomeTaxRateReconciliationReserveforUncertainTaxPositionsPercent	-6.068
CY2016	amrc	Effective Income Tax Rate Reconciliation Reservefor Uncertain Tax Positions Percent EffectiveIncomeTaxRateReconciliationReserveforUncertainTaxPositionsPercent	-0.025
CY2017	amrc	Effective Income Tax Rate Reconciliation Reservefor Uncertain Tax Positions Percent EffectiveIncomeTaxRateReconciliationReserveforUncertainTaxPositionsPercent	0.001
CY2015	amrc	Effective Income Tax Rate Reconciliation State Impact Of Deferred Rate Change Net EffectiveIncomeTaxRateReconciliationStateImpactOfDeferredRateChangeNet	0.188
CY2016	amrc	Effective Income Tax Rate Reconciliation State Impact Of Deferred Rate Change Net EffectiveIncomeTaxRateReconciliationStateImpactOfDeferredRateChangeNet	-0.007
CY2017	amrc	Effective Income Tax Rate Reconciliation State Impact Of Deferred Rate Change Net EffectiveIncomeTaxRateReconciliationStateImpactOfDeferredRateChangeNet	0.011
CY2015	amrc	Income Before Income Taxes And Unallocated Corporate Expenses IncomeBeforeIncomeTaxesAndUnallocatedCorporateExpenses	26369000	USD
CY2016	amrc	Income Before Income Taxes And Unallocated Corporate Expenses IncomeBeforeIncomeTaxesAndUnallocatedCorporateExpenses	48592000	USD
CY2017	amrc	Income Before Income Taxes And Unallocated Corporate Expenses IncomeBeforeIncomeTaxesAndUnallocatedCorporateExpenses	55912000	USD
CY2015	amrc	Income Tax Reconciliation Nondeductible Expense Deferred Rate Change Net IncomeTaxReconciliationNondeductibleExpenseDeferredRateChangeNet	55000	USD
CY2016	amrc	Income Tax Reconciliation Nondeductible Expense Deferred Rate Change Net IncomeTaxReconciliationNondeductibleExpenseDeferredRateChangeNet	-110000	USD
CY2017	amrc	Income Tax Reconciliation Nondeductible Expense Deferred Rate Change Net IncomeTaxReconciliationNondeductibleExpenseDeferredRateChangeNet	327000	USD
CY2015	amrc	Income Tax Reconciliation Nondeductible Expense Energy Efficiency Preferences IncomeTaxReconciliationNondeductibleExpenseEnergyEfficiencyPreferences	-3280000	USD
CY2016	amrc	Income Tax Reconciliation Nondeductible Expense Energy Efficiency Preferences IncomeTaxReconciliationNondeductibleExpenseEnergyEfficiencyPreferences	-4130000	USD
CY2017	amrc	Income Tax Reconciliation Nondeductible Expense Energy Efficiency Preferences IncomeTaxReconciliationNondeductibleExpenseEnergyEfficiencyPreferences	-6416000	USD
CY2015	amrc	Income Tax Reconciliation Nondeductible Expense Miscellaneous IncomeTaxReconciliationNondeductibleExpenseMiscellaneous	-12000	USD
CY2016	amrc	Income Tax Reconciliation Nondeductible Expense Miscellaneous IncomeTaxReconciliationNondeductibleExpenseMiscellaneous	910000	USD
CY2017	amrc	Income Tax Reconciliation Nondeductible Expense Miscellaneous IncomeTaxReconciliationNondeductibleExpenseMiscellaneous	1420000	USD
CY2017Q4	amrc	Investment Funds Purchase Of Solar Energy Systems InvestmentFundsPurchaseOfSolarEnergySystems	2	fund
CY2017Q4	amrc	Long Term Debt Carrying Value In Excess Of Fair Value LongTermDebtCarryingValueInExcessOfFairValue	490000	USD
CY2017	amrc	Loss Contingency Self Insurance Maximum Exposure Per Participant LossContingencySelfInsuranceMaximumExposurePerParticipant	100000
CY2015	amrc	Minority Interestin Foreign Subsidiary MinorityInterestinForeignSubsidiary	116000	USD
CY2015	amrc	Noncashor Part Noncash Acquisition Financing Receivable Acquired NoncashorPartNoncashAcquisitionFinancingReceivableAcquired	26606000	USD
CY2016	amrc	Noncashor Part Noncash Acquisition Financing Receivable Acquired NoncashorPartNoncashAcquisitionFinancingReceivableAcquired	79075000	USD
CY2017	amrc	Noncashor Part Noncash Acquisition Financing Receivable Acquired NoncashorPartNoncashAcquisitionFinancingReceivableAcquired	66921000	USD
CY2015	amrc	Proceeds From Government Grants ProceedsFromGovernmentGrants	0	USD
CY2016	amrc	Proceeds From Government Grants ProceedsFromGovernmentGrants	0	USD
CY2017	amrc	Proceeds From Government Grants ProceedsFromGovernmentGrants	0	USD
CY2015	amrc	Proceeds From Sale Of Investment Assets ProceedsFromSaleOfInvestmentAssets	0	USD
CY2016	amrc	Proceeds From Sale Of Investment Assets ProceedsFromSaleOfInvestmentAssets	0	USD
CY2017	amrc	Proceeds From Sale Of Investment Assets ProceedsFromSaleOfInvestmentAssets	3993000	USD
CY2015	amrc	Provisionfor Doubtful Accounts Including Retainage Accounts ProvisionforDoubtfulAccountsIncludingRetainageAccounts	4102000	USD
CY2016	amrc	Provisionfor Doubtful Accounts Including Retainage Accounts ProvisionforDoubtfulAccountsIncludingRetainageAccounts	5392000	USD
CY2017	amrc	Provisionfor Doubtful Accounts Including Retainage Accounts ProvisionforDoubtfulAccountsIncludingRetainageAccounts	77000	USD
CY2015	amrc	Rebates From Utility Company RebatesFromUtilityCompany	0	USD
CY2016	amrc	Rebates From Utility Company RebatesFromUtilityCompany	0	USD
CY2017	amrc	Rebates From Utility Company RebatesFromUtilityCompany	0	USD
CY2016Q4	amrc	Sale Leaseback Transaction Deferred Loss Net Total SaleLeasebackTransactionDeferredLossNetTotal	1009000	USD
CY2017Q4	amrc	Sale Leaseback Transaction Deferred Loss Net Total SaleLeasebackTransactionDeferredLossNetTotal	2172000	USD
CY2016	amrc	Stock Repurchase Program Repurchase Fees StockRepurchaseProgramRepurchaseFees	52000	USD
CY2017	amrc	Stock Repurchase Program Repurchase Fees StockRepurchaseProgramRepurchaseFees	23000	USD
CY2017	amrc	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Liability Provisional Income Tax Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxLiabilityProvisionalIncomeTaxBenefit	13900000	USD
CY2016	amrc	Temporary Equity Noncontrolling Interest Increasefrom Subsidiary Equity Issuance TemporaryEquityNoncontrollingInterestIncreasefromSubsidiaryEquityIssuance	6392000	USD
CY2015	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	-50000	USD
CY2016	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	99000	USD
CY2017	amrc	Temporary Equity Noncontrolling Interest Increasefrom Subsidiary Equity Issuance TemporaryEquityNoncontrollingInterestIncreasefromSubsidiaryEquityIssuance	7762000	USD
CY2015	amrc	Unallocated Corporate Expense Segment UnallocatedCorporateExpenseSegment	-26077000	USD
CY2016	amrc	Unallocated Corporate Expense Segment UnallocatedCorporateExpenseSegment	-32225000	USD
CY2017	amrc	Unallocated Corporate Expense Segment UnallocatedCorporateExpenseSegment	-27195000	USD
CY2015Q3	amrc	Variable Interest Entity Termof Extensionof Call Option VariableInterestEntityTermofExtensionofCallOption	P6M
CY2017Q2	amrc	Variable Interest Entity Termof Extensionof Call Option VariableInterestEntityTermofExtensionofCallOption	P6M
CY2015Q3	amrc	Variable Interest Entity Termof Extensionof Put Option VariableInterestEntityTermofExtensionofPutOption	P1Y
CY2017Q2	amrc	Variable Interest Entity Termof Extensionof Put Option VariableInterestEntityTermofExtensionofPutOption	P1Y
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	0001488139
CY2017	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2017	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2017Q2	dei	Entity Public Float EntityPublicFloat	155530275	USD
CY2017	dei	Entity Registrant Name EntityRegistrantName	Ameresco, Inc.
CY2017	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2017	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2016Q4	us-gaap	Accounts Payable And Accrued Liabilities Noncurrent AccountsPayableAndAccruedLiabilitiesNoncurrent	133003000	USD
CY2017Q4	us-gaap	Accounts Payable And Accrued Liabilities Noncurrent AccountsPayableAndAccruedLiabilitiesNoncurrent	235088000	USD
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CY2017Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	135881000	USD
CY2016Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	85354000	USD
CY2017Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	85121000	USD
CY2016Q4	us-gaap	Accounts Receivable Net Noncurrent AccountsReceivableNetNoncurrent	158209000	USD
CY2017Q4	us-gaap	Accounts Receivable Net Noncurrent AccountsReceivableNetNoncurrent	248917000	USD
CY2016Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	22763000	USD
CY2017Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	23260000	USD
CY2016Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	25240000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	27934000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-6591000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5626000	USD
CY2016Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	112926000	USD
CY2017Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	116196000	USD
CY2017	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	0	USD
CY2015	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1830000	USD
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CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1293000	USD
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CY2015Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3729000	USD
CY2016Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	7836000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3315000	USD
CY2015	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1139000	USD
CY2016	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1503000	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1620000	USD
CY2015	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1030000	USD
CY2016	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1173000	USD
CY2017	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1350000	USD
CY2015	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4150000	USD
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2358000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1451000	USD
CY2015	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1767778	shares
CY2016	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3530220	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2560353	shares
CY2016Q4	us-gaap	Assets Assets	797281000	USD
CY2017Q4	us-gaap	Assets Assets	983951000	USD
CY2016Q4	us-gaap	Assets Current AssetsCurrent	226061000	USD
CY2017Q4	us-gaap	Assets Current AssetsCurrent	287078000	USD
CY2016Q4	us-gaap	Billings In Excess Of Cost Current BillingsInExcessOfCostCurrent	21189000	USD
CY2017Q4	us-gaap	Billings In Excess Of Cost Current BillingsInExcessOfCostCurrent	19871000	USD
CY2015	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	5065000	USD
CY2016	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	19506000	USD
CY2017	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	7335000	USD
CY2016Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	14647000	USD
CY2017Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	34869000	USD
CY2016Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	15640000	USD
CY2017Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	38725000	USD
CY2016Q4	us-gaap	Capital Leases Balance Sheet Assets By Major Class Net CapitalLeasesBalanceSheetAssetsByMajorClassNet	14896000	USD
CY2017Q4	us-gaap	Capital Leases Balance Sheet Assets By Major Class Net CapitalLeasesBalanceSheetAssetsByMajorClassNet	36676000	USD
CY2015	us-gaap	Capital Leases Income Statement Amortization Expense CapitalLeasesIncomeStatementAmortizationExpense	174000	USD
CY2016	us-gaap	Capital Leases Income Statement Amortization Expense CapitalLeasesIncomeStatementAmortizationExpense	570000	USD
CY2017	us-gaap	Capital Leases Income Statement Amortization Expense CapitalLeasesIncomeStatementAmortizationExpense	1305000	USD
CY2016Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	744000	USD
CY2017Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	2049000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	23762000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	21645000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	20607000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	24262000	USD
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-2117000	USD
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-1038000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	3655000	USD
CY2016Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-7292000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	10634000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	34473000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-1764000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	10669000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	38456000	USD
CY2016Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	9180000	USD
CY2017Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	11379000	USD
CY2016Q4	us-gaap	Contract Receivable Retainage ContractReceivableRetainage	17465000	USD
CY2017Q4	us-gaap	Contract Receivable Retainage ContractReceivableRetainage	17484000	USD
CY2015	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	513768000	USD
CY2016	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	516883000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	572994000	USD
CY2016Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs CostsInExcessOfBillingsOnUncompletedContractsOrPrograms	56914000	USD
CY2017Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs CostsInExcessOfBillingsOnUncompletedContractsOrPrograms	104852000	USD
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	224000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1304000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-1055000	USD
CY2015	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	443000	USD
CY2016	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-106000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	161000	USD
CY2015	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1270000	USD
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1501000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-223000	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	603000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	303000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	671000	USD
CY2017Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	697000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	3861000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2341000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-6683000	USD
CY2016Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	5528000	USD
CY2017Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	6556000	USD
CY2015	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-289000	USD
CY2016	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	422000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	262000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3706000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2869000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4568000	USD
CY2016Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	36625000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	32544000	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	134000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	106000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1853000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	1500000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	866000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	34932000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	39494000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	27588000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	31960000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	8044000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	10099000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	14449000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	22716000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	4259000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	3042000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	4597000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	2149000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	732000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	-193000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	7344000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	7534000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	9037000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	584000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	9037000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	584000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	30974000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	24178000	USD
CY2015	us-gaap	Depreciation Depreciation	3263000	USD
CY2016	us-gaap	Depreciation Depreciation	3020000	USD
CY2017	us-gaap	Depreciation Depreciation	2394000	USD
CY2015	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	21522000	USD
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	22764000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	23915000	USD
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.02
CY2016Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.02
CY2016Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.04
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.12
CY2016Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.07
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.26
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.01
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.13
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.19
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.82
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.02
CY2016Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.02
CY2016Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.04
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.12
CY2016Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.07
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.01
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.13
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.19
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.82
CY2015	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-1455000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	25998000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	3931000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	23558000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	25707000	USD
CY2016	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-650000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	168000	USD
CY2015	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	17.042
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.267
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.167
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	14.572
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.013
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.015
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.000
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.000
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.486
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	5.329
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.032
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.005
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	3.195
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.041
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.051
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	1.377
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.019
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.004
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.041
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.055
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.049
CY2015	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	2.068
CY2016	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.041
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.055
CY2015	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	-50000	USD
CY2016	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	99000	USD
CY2017	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
CY2015	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	-50000	USD
CY2016	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	99000	USD
CY2017	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	0	USD
CY2015	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	73243000	USD
CY2016	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	116753000	USD
CY2017	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	157538000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	21776000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2440000	USD
CY2015	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-2369000	USD
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-5000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	1294000	USD
CY2015	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-2083000	USD
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-167000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	1406000	USD
CY2015	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	368000	USD
CY2016	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	279000	USD
CY2017	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	271000	USD
CY2015	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	17000	USD
CY2016	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	103000	USD
CY2015	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	110007000	USD
CY2016	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	110568000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	107570000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	59085000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	57976000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	56135000	USD
CY2016	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-1109000	USD
CY2017	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	798000	USD
CY2016Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	1016000	USD
CY2017Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	1016000	USD
CY2016	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2017	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	2639000	USD
CY2015	us-gaap	Gross Profit GrossProfit	117064000	USD
CY2016Q1	us-gaap	Gross Profit GrossProfit	27676000	USD
CY2016Q2	us-gaap	Gross Profit GrossProfit	31856000	USD
CY2016Q3	us-gaap	Gross Profit GrossProfit	38795000	USD
CY2016Q4	us-gaap	Gross Profit GrossProfit	36017000	USD
CY2016	us-gaap	Gross Profit GrossProfit	134344000	USD
CY2017Q1	us-gaap	Gross Profit GrossProfit	25924000	USD
CY2017Q2	us-gaap	Gross Profit GrossProfit	35408000	USD
CY2017Q3	us-gaap	Gross Profit GrossProfit	41367000	USD
CY2017Q4	us-gaap	Gross Profit GrossProfit	41459000	USD
CY2017	us-gaap	Gross Profit GrossProfit	144158000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	17860000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	19874000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	29792000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-17568000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-3507000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-1075000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	292000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	16367000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	28717000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4976000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4370000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-4791000	USD
CY2015	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	4255000	USD
CY2016Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	406000	USD
CY2017Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	6053000	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	213000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	424000	USD
CY2015	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-13948000	USD
CY2015	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	1556000	USD
CY2016	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	516000	USD
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	139000	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	102000	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	5728000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	10048000	USD
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	933000	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	670000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	1473000	USD
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	402000	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	306000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	116000	USD
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	604000	USD
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	678000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1584000	USD
CY2015	us-gaap	Income Taxes Paid IncomeTaxesPaid	1437000	USD
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	3475000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	5782000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	26273000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-2798000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	19652000	USD
CY2015	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	4472000	USD
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	12002000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-1870000	USD
CY2015	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	1171000	USD
CY2016	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	1988000	USD
CY2017	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-5678000	USD
CY2015	us-gaap	Increase Decrease In Billing In Excess Of Cost Of Earnings IncreaseDecreaseInBillingInExcessOfCostOfEarnings	10674000	USD
CY2016	us-gaap	Increase Decrease In Billing In Excess Of Cost Of Earnings IncreaseDecreaseInBillingInExcessOfCostOfEarnings	-6974000	USD
CY2017	us-gaap	Increase Decrease In Billing In Excess Of Cost Of Earnings IncreaseDecreaseInBillingInExcessOfCostOfEarnings	-2168000	USD
CY2015	us-gaap	Increase Decrease In Construction Payables IncreaseDecreaseInConstructionPayables	-4581000	USD
CY2016	us-gaap	Increase Decrease In Construction Payables IncreaseDecreaseInConstructionPayables	4162000	USD
CY2017	us-gaap	Increase Decrease In Construction Payables IncreaseDecreaseInConstructionPayables	-3007000	USD
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	4327000	USD
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-1118000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-3966000	USD
CY2015	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-2444000	USD
CY2016	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-3578000	USD
CY2017	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-540000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	4083000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	525000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	60000	USD
CY2015	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	22904000	USD
CY2016	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-31170000	USD
CY2017	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	46730000	USD
CY2015	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	3369000	USD
CY2016	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	98000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2471000	USD
CY2015	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	3825000	USD
CY2016	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-3875000	USD
CY2017	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-1279000	USD
CY2015	us-gaap	Increase Decrease In Restricted Cash For Operating Activities IncreaseDecreaseInRestrictedCashForOperatingActivities	-3108000	USD
CY2016	us-gaap	Increase Decrease In Restricted Cash For Operating Activities IncreaseDecreaseInRestrictedCashForOperatingActivities	5423000	USD
CY2017	us-gaap	Increase Decrease In Restricted Cash For Operating Activities IncreaseDecreaseInRestrictedCashForOperatingActivities	818000	USD
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1171000	shares
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	84000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	239000	shares
CY2016Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3931000	USD
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2440000	USD
CY2015	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	941000	USD
CY2016	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1253000	USD
CY2017	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	4256000	USD
CY2015	us-gaap	Interest Expense InterestExpense	5250000	USD
CY2016	us-gaap	Interest Expense InterestExpense	7076000	USD
CY2017	us-gaap	Interest Expense InterestExpense	9082000	USD
CY2015	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-3734000	USD
CY2016	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-6510000	USD
CY2017	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-8086000	USD
CY2015	us-gaap	Interest Income Operating InterestIncomeOperating	1331000	USD
CY2016	us-gaap	Interest Income Operating InterestIncomeOperating	50000	USD
CY2017	us-gaap	Interest Income Operating InterestIncomeOperating	130000	USD
CY2015	us-gaap	Interest Paid InterestPaid	5537000	USD
CY2016	us-gaap	Interest Paid InterestPaid	7220000	USD
CY2017	us-gaap	Interest Paid InterestPaid	11675000	USD
CY2016Q4	us-gaap	Inventory Net InventoryNet	12104000	USD
CY2017Q4	us-gaap	Inventory Net InventoryNet	8139000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	797281000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	983951000	USD
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	190602000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	202142000	USD
CY2017Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	38928000	USD
CY2016Q4	us-gaap	Long Term Debt LongTermDebt	165413000	USD
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	202168000	USD
CY2016Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	140593000	USD
CY2017Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	173237000	USD
CY2016Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	19292000	USD
CY2017Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	22375000	USD
CY2017Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	160108000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	58451000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	9933000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	10990000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	78944000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	22172000	USD
CY2016Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	140593000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	173237000	USD
CY2017	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	288000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	100705000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	137301000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	228088000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-51829000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-79616000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-88042000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-49538000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-58073000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-136559000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	844000	USD
CY2016Q1	us-gaap	Net Income Loss NetIncomeLoss	1054000	USD
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	1994000	USD
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	5715000	USD
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	3269000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	12032000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	-644000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	5831000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	8493000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	23811000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	37491000	USD
CY2015	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-5528000	USD
CY2016	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-35000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-3983000	USD
CY2016	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	0	USD
CY2017	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	0	USD
CY2016Q4	us-gaap	Noncurrent Assets NoncurrentAssets	324776000	USD
CY2017Q4	us-gaap	Noncurrent Assets NoncurrentAssets	361746000	USD
CY2015	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-6765000	USD
CY2016	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-7409000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-7871000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	7057000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	23776000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	36588000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	26886000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	5549000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	2711000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	2919000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	3864000	USD
CY2017	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	3409000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	4677000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	7166000	USD
CY2015	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	2198000	USD
CY2016	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	3162000	USD
CY2015	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	6070000	USD
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	6147000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	6362000	USD
CY2016Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	26328000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	27635000	USD
CY2015	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	-390000	USD
CY2016	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	52000	USD
CY2017	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	35000	USD
CY2015	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-2378000	USD
CY2016	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-1869000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	655000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-230000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	506000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	310000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2608000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1363000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	965000	USD
CY2016Q4	us-gaap	Other Deferred Credits Noncurrent OtherDeferredCreditsNoncurrent	7739000	USD
CY2017Q4	us-gaap	Other Deferred Credits Noncurrent OtherDeferredCreditsNoncurrent	7188000	USD
CY2016Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	15154000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	18754000	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	6387000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3412000	USD
CY2015	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	2748000	USD
CY2016	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	1908000	USD
CY2017	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	2877000	USD
CY2015	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2016	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	3575000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2409000	USD
CY2015	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	51340000	USD
CY2016	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	73234000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	85559000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1343000	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2807000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2851000	USD
CY2016Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2017Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2016Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2016Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	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
CY2016Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	11732000	USD
CY2017Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	14037000	USD
CY2015	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	17747000	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	38004000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	48483000	USD
CY2015	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	6018000	USD
CY2016	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	6392000	USD
CY2017	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	7473000	USD
CY2015	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-116000	USD
CY2016	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	0	USD
CY2017	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	0	USD
CY2015	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	6300000	USD
CY2016	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	3822000	USD
CY2017	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	12547000	USD
CY2015	us-gaap	Proceeds From Repayments Of Restricted Cash Financing Activities ProceedsFromRepaymentsOfRestrictedCashFinancingActivities	-5684000	USD
CY2016	us-gaap	Proceeds From Repayments Of Restricted Cash Financing Activities ProceedsFromRepaymentsOfRestrictedCashFinancingActivities	3155000	USD
CY2017	us-gaap	Proceeds From Repayments Of Restricted Cash Financing Activities ProceedsFromRepaymentsOfRestrictedCashFinancingActivities	-2149000	USD
CY2015	us-gaap	Proceeds From Sale Of Investment Projects ProceedsFromSaleOfInvestmentProjects	77971000	USD
CY2016	us-gaap	Proceeds From Sale Of Investment Projects ProceedsFromSaleOfInvestmentProjects	90039000	USD
CY2017	us-gaap	Proceeds From Sale Of Investment Projects ProceedsFromSaleOfInvestmentProjects	165013000	USD
CY2015	us-gaap	Proceeds From Sale Of Machinery And Equipment ProceedsFromSaleOfMachineryAndEquipment	854000	USD
CY2016	us-gaap	Proceeds From Sale Of Machinery And Equipment ProceedsFromSaleOfMachineryAndEquipment	0	USD
CY2017	us-gaap	Proceeds From Sale Of Machinery And Equipment ProceedsFromSaleOfMachineryAndEquipment	0	USD
CY2015	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2777000	USD
CY2015	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1153000	USD
CY2016	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1054000	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1977000	USD
CY2015	us-gaap	Profit Loss ProfitLoss	-4684000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	11997000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	33508000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	30258000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	33237000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	5018000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	5303000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Other Net PropertyPlantAndEquipmentOtherNet	319758000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Other Net PropertyPlantAndEquipmentOtherNet	356443000	USD
CY2015	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1451000	USD
CY2016	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	4332000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	81000	USD
CY2016Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	6847000	USD
CY2017Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	10338000	USD
CY2015	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	12392000	USD
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	14014000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	54164000	USD
CY2016Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	12299000	USD
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	15751000	USD
CY2016Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	19920000	USD
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	20092000	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	194353000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	235844000	USD
CY2016Q4	us-gaap	Sale Leaseback Transaction Deferred Gain Net SaleLeasebackTransactionDeferredGainNet	1721000	USD
CY2017Q4	us-gaap	Sale Leaseback Transaction Deferred Gain Net SaleLeasebackTransactionDeferredGainNet	6173000	USD
CY2015	us-gaap	Sale Leaseback Transaction Gross Proceeds Financing Activities SaleLeasebackTransactionGrossProceedsFinancingActivities	12506000	USD
CY2016	us-gaap	Sale Leaseback Transaction Gross Proceeds Financing Activities SaleLeasebackTransactionGrossProceedsFinancingActivities	17045000	USD
CY2017	us-gaap	Sale Leaseback Transaction Gross Proceeds Financing Activities SaleLeasebackTransactionGrossProceedsFinancingActivities	51204000	USD
CY2015	us-gaap	Sales Revenue Net SalesRevenueNet	630832000	USD
CY2016Q1	us-gaap	Sales Revenue Net SalesRevenueNet	133776000	USD
CY2016Q2	us-gaap	Sales Revenue Net SalesRevenueNet	162628000	USD
CY2016Q3	us-gaap	Sales Revenue Net SalesRevenueNet	180598000	USD
CY2016Q4	us-gaap	Sales Revenue Net SalesRevenueNet	174225000	USD
CY2016	us-gaap	Sales Revenue Net SalesRevenueNet	651227000	USD
CY2017Q1	us-gaap	Sales Revenue Net SalesRevenueNet	134610000	USD
CY2017Q2	us-gaap	Sales Revenue Net SalesRevenueNet	166665000	USD
CY2017Q3	us-gaap	Sales Revenue Net SalesRevenueNet	204744000	USD
CY2017Q4	us-gaap	Sales Revenue Net SalesRevenueNet	211133000	USD
CY2017	us-gaap	Sales Revenue Net SalesRevenueNet	717152000	USD
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	1769000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	1462000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	1293000	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	2494009	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	8.280
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	1024000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	575000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	808000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	317604	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	85557	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	168633	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	194562	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	41500	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	747100	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	665000	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	390353	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	7691000	USD
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3893573	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4139440	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3971382	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3833647	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	7.721
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	7.740
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	7.300
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	7.367
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue	3950000	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	1339638	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice	5.667
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	3.467
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	3.286
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	4.935
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	11.293
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	10.157
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	9.409
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	8.154
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	6.421
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	6.404
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	4.703
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	6.061
CY2017Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	3741000	USD
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y7M2D
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y2M19D
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1	P8Y3M
CY2015	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	332600	shares
CY2016	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	320892	shares
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	401031	shares
CY2015	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1153000	USD
CY2016	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1054000	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1977000	USD
CY2014Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	286306000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	287409000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	294306000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	336620000	USD
CY2016Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	775000	USD
CY2017Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	755000	USD
CY2014Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	0	USD
CY2015Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	490000	USD
CY2016Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	6847000	USD
CY2017Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	10338000	USD
CY2015	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	-5528000	USD
CY2016	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	-35000	USD
CY2017	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	-3983000	USD
CY2016Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1298418	shares
CY2017Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1873266	shares
CY2016	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1298418	shares
CY2017	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	574848	shares
CY2016Q4	us-gaap	Treasury Stock Value TreasuryStockValue	6387000	USD
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	9799000	USD
CY2016	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	6387000	USD
CY2017	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	3412000	USD
CY2015	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	368000	USD
CY2016	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	279000	USD
CY2017	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	271000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2200000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	600000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	600000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	290000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1310000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2015	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-200000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-20000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-60000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	20000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	80000	USD
CY2015	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	16911000	USD
CY2016	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	19377000	USD
CY2017	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	21648000	USD
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47665000	shares
CY2016Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	46860000	shares
CY2016Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	46793000	shares
CY2016Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	46430000	shares
CY2016Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	45907000	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	46493000	shares
CY2017Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	45514000	shares
CY2017Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	45675000	shares
CY2017Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	45771000	shares
CY2017Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	45957000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	45748000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46494000	shares
CY2016Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46742000	shares
CY2016Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46719000	shares
CY2016Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46361000	shares
CY2016Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	45811000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46409000	shares
CY2017Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	45514000	shares
CY2017Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	45463000	shares
CY2017Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	45524000	shares
CY2017Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	45537000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	45509000	shares
CY2017	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:8px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">DESCRIPTION OF BUSINESS</font></div><div style="line-height:120%;padding-bottom:8px;text-align:left;text-indent:24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Ameresco, Inc. (including its subsidiaries, the “Company”) was organized as a Delaware corporation on April 25, 2000. The Company is a provider of energy efficiency solutions for facilities throughout North America and Europe. The Company provides solutions, both services and products, that enable customers to reduce their energy consumption, lower their operating and maintenance costs and realize environmental benefits. The Company’s comprehensive set of solutions includes upgrades to a facility’s energy infrastructure and the construction and operation of small-scale renewable energy plants. It also sells certain photovoltaic (“PV”) equipment worldwide. The Company operates in the United States, Canada and Europe.</font><font style="font-family:inherit;font-size:1pt;"> </font></div><div style="line-height:120%;padding-bottom:8px;text-align:left;text-indent:24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company is compensated through a variety of methods, including: 1) direct payments based on fee-for-services contracts (utilizing lump-sum or cost-plus pricing methodologies); 2) the sale of energy from the Company’s energy assets; and 3) direct payment for PV equipment and systems.</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;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates</font><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;padding-bottom:6px;padding-top:6px;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. The most significant estimates and assumptions used in these consolidated financial statements relate to management’s estimates of final construction contract profit in accordance with accounting for long-term contracts, allowance for doubtful accounts, inventory reserves, realization of project development costs, fair value of derivative financial instruments, accounting for business acquisitions, stock-based awards, impairment of long-lived assets, income taxes, self insurance reserves and potential liability in conjunction with certain commitments and contingencies. Actual results could differ from those estimates.</font></div><div style="line-height:120%;padding-bottom:8px;text-align:left;text-indent:24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company is self-insured for employee health insurance. The maximum exposure in fiscal year </font><font style="font-family:inherit;font-size:10pt;">2017</font><font style="font-family:inherit;font-size:10pt;"> under the plan was </font><font style="font-family:inherit;font-size:10pt;">$100</font><font style="font-family:inherit;font-size:10pt;"> per covered participant, after which reinsurance takes effect. The liability for unpaid claims and associated expenses, including incurred but not reported claims, is determined by management and reflected in the Company’s consolidated balance sheets in accrued expenses and other current liabilities. The liability is calculated based on historical data, which considers both the frequency and settlement amount of claims. The Company’s estimated accrual for this liability could be different than its ultimate obligation if variables such as the frequency or amount of future claims differ significantly from management’s assumptions.</font><font style="font-family:inherit;font-size:1pt;"> </font></div></div>

Files In Submission

Name	View Source	Status
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$AMRC
Ameresco, Inc. Stock $amrc

2017 Q4 Form 10-K Financial Statement

#000148813918000015 Filed on March 07, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AMRC Ameresco, Inc. Stock $amrc

2017 Q4 Form 10-K Financial Statement

#000148813918000015 Filed on March 07, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AMRC
Ameresco, Inc. Stock $amrc