$AMRC
Ameresco, Inc. Stock $amrc

$amrc Overview Financials Valuation SEC Filings Company Website

2023 Q4 Form 10-K Financial Statement

#000148813924000014 Filed on February 29, 2024

Income Statement

Concept	2023 Q4	2023
Revenue	$441.4M	$1.375B
YoY Change	33.05%	-24.65%
Cost Of Revenue	$367.2M	$1.128B
YoY Change	35.93%	-26.43%
Gross Profit	$74.18M	$246.4M
YoY Change	20.42%	-15.27%
Gross Profit Margin	16.81%	17.93%
Selling, General & Admin	$36.21M	$162.1M
YoY Change	-7.1%	2.72%
% of Gross Profit	48.82%	65.8%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$18.53M	$64.13M
YoY Change	33.84%	22.31%
% of Gross Profit	24.99%	26.02%
Operating Expenses	$36.67M	$162.1M
YoY Change	-6.64%	2.72%
Operating Profit	$37.50M	$82.22M
YoY Change	68.07%	-38.18%
Interest Expense	-$13.20M	$26.92M
YoY Change	48.92%	51.46%
% of Operating Profit	-35.2%	32.74%
Other Income/Expense, Net	-$2.464M	-$43.95M
YoY Change	-267.96%	61.14%
Pretax Income	$18.01M	$38.27M
YoY Change	20.73%	-60.95%
Income Tax	-$15.08M	-$25.64M
% Of Pretax Income	-83.75%	-66.99%
Net Earnings	$33.71M	$62.47M
YoY Change	88.31%	-34.19%
Net Earnings / Revenue	7.64%	4.54%
Basic Earnings Per Share		$1.20
Diluted Earnings Per Share	$0.63	$1.17
COMMON SHARES
Basic Shares Outstanding		52.14M shares
Diluted Shares Outstanding		53.23M shares

Balance Sheet

Concept	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$79.27M	$79.27M
YoY Change	-31.39%	-31.39%
Cash & Equivalents	$79.27M	$79.27M
Short-Term Investments
Other Short-Term Assets	$206.4M	$206.4M
YoY Change	173.7%	173.7%
Inventory	$13.64M	$13.64M
Prepaid Expenses	$10.70M
Receivables	$823.4M	$823.4M
Other Receivables	$74.45M	$5.775M
Total Short-Term Assets	$1.128B	$1.128B
YoY Change	12.69%	12.69%
LONG-TERM ASSETS
Property, Plant & Equipment	$17.40M	$1.765B
YoY Change	10.75%	42.9%
Goodwill	$75.59M
YoY Change	7.01%
Intangibles	$6.808M
YoY Change	45.07%
Long-Term Investments	$18.71M
YoY Change	72.35%
Other Assets	$89.74M	$128.2M
YoY Change	132.69%	132.4%
Total Long-Term Assets	$2.585B	$2.585B
YoY Change	37.85%	37.85%
TOTAL ASSETS
Total Short-Term Assets	$1.128B	$1.128B
Total Long-Term Assets	$2.585B	$2.585B
Total Assets	$3.714B	$3.714B
YoY Change	29.09%	29.09%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$402.8M	$402.8M
YoY Change	15.36%	15.36%
Accrued Expenses	$108.8M	$122.4M
YoY Change	22.05%	28.85%
Deferred Revenue	$52.90M
YoY Change	52.04%
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due	$322.2M	$322.2M
YoY Change	-2.79%	-2.79%
Total Short-Term Liabilities	$901.5M	$901.5M
YoY Change	11.01%	11.01%
LONG-TERM LIABILITIES
Long-Term Debt	$1.170B	$1.170B
YoY Change	105.77%	105.77%
Other Long-Term Liabilities	$82.71M	$665.0M
YoY Change	67.12%	17.23%
Total Long-Term Liabilities	$82.71M	$1.835B
YoY Change	67.12%	61.55%
TOTAL LIABILITIES
Total Short-Term Liabilities	$901.5M	$901.5M
Total Long-Term Liabilities	$82.71M	$1.835B
Total Liabilities	$984.2M	$2.812B
YoY Change	14.23%	36.97%
SHAREHOLDERS EQUITY
Retained Earnings	$595.9M
YoY Change	11.69%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$902.0M	$902.0M
YoY Change
Total Liabilities & Shareholders Equity	$3.714B	$3.714B
YoY Change	29.09%	29.09%

Cashflow Statement

Concept	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$33.71M	$62.47M
YoY Change	88.31%	-34.19%
Depreciation, Depletion And Amortization	$18.53M	$64.13M
YoY Change	33.84%	22.31%
Cash From Operating Activities	-$29.57M	-$69.99M
YoY Change	-54.59%	-79.31%
INVESTING ACTIVITIES
Capital Expenditures	$93.61M	$5.713M
YoY Change	-25.53%	7.87%
Acquisitions		$9.182M
YoY Change
Other Investing Activities	-$8.144M	-$15.18M
YoY Change	814300.0%	3206.32%
Cash From Investing Activities	-$101.8M	-$566.9M
YoY Change	-19.05%	72.66%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$0.00
YoY Change
Debt Paid & Issued, Net		$303.1M
YoY Change		87.24%
Cash From Financing Activities	108.4M	$640.8M
YoY Change	-38.42%	-12.25%
NET CHANGE
Cash From Operating Activities	-29.57M	-$69.99M
Cash From Investing Activities	-101.8M	-$566.9M
Cash From Financing Activities	108.4M	$640.8M
Net Change In Cash	-22.92M	$3.788M
YoY Change	55.06%	-93.97%
FREE CASH FLOW
Cash From Operating Activities	-$29.57M	-$69.99M
Capital Expenditures	$93.61M	$5.713M
Free Cash Flow	-$123.2M	-$75.70M
YoY Change	-35.45%	-77.97%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	9733000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	97542000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	87054000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	18782000	usd
CY2022	us-gaap	Income Taxes Paid IncomeTaxesPaid	7278000	usd
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	2670000	usd
CY2023	amrc	Noncashor Part Noncash Acquisition Financing Receivable Acquired NoncashorPartNoncashAcquisitionFinancingReceivableAcquired	99164000	usd
CY2023	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	78382000	usd
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	2263000	usd
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0001488139
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	us-gaap	Operating Lease Income Comprehensive Income Extensible List OperatingLeaseIncomeComprehensiveIncomeExtensibleList	http://fasb.org/us-gaap/2023#RevenueFromContractWithCustomerExcludingAssessedTax
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#PropertyPlantAndEquipmentOtherNet
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#PropertyPlantAndEquipmentOtherNet
CY2023Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#LongTermDebtCurrent
CY2022Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#LongTermDebtCurrent
CY2022Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#LongTermDebtAndCapitalLeaseObligations
CY2023Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#LongTermDebtAndCapitalLeaseObligations
CY2023	us-gaap	Fair Value Recurring Basis Unobservable Input Reconciliation Liability Gain Loss Statement Of Income Extensible List FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleList	http://fasb.org/us-gaap/2023#SellingGeneralAndAdministrativeExpense
CY2023	us-gaap	Derivative Gain Loss Statement Of Income Or Comprehensive Income Extensible Enumeration DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration	http://fasb.org/us-gaap/2023#NonoperatingIncomeExpense
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	1550437708	usd
CY2023	dei	Auditor Firm AuditorFirmId	49
CY2023	dei	Auditor Name AuditorName	RSM US LLP
CY2023	dei	Auditor Location AuditorLocation	Boston, Massachusetts
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	79271000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	115534000	usd
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	62311000	usd
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	20782000	usd
CY2023Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	153362000	usd
CY2022Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	174009000	usd
CY2023Q4	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	33826000	usd
CY2022Q4	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	38057000	usd
CY2023Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	636163000	usd
CY2022Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	576363000	usd
CY2023Q4	us-gaap	Inventory Net InventoryNet	13637000	usd
CY2022Q4	us-gaap	Inventory Net InventoryNet	14218000	usd
CY2023Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	123391000	usd
CY2022Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	38617000	usd
CY2023Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	5775000	usd
CY2022Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	7746000	usd
CY2023Q4	us-gaap	Capitalized Contract Cost Net Current CapitalizedContractCostNetCurrent	20735000	usd
CY2022Q4	us-gaap	Capitalized Contract Cost Net Current CapitalizedContractCostNetCurrent	16025000	usd
CY2023Q4	us-gaap	Assets Current AssetsCurrent	1128471000	usd
CY2022Q4	us-gaap	Assets Current AssetsCurrent	1001351000	usd
CY2023Q4	us-gaap	Accounts Receivable Net Noncurrent AccountsReceivableNetNoncurrent	609265000	usd
CY2022Q4	us-gaap	Accounts Receivable Net Noncurrent AccountsReceivableNetNoncurrent	509507000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	17395000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	15707000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Other Net PropertyPlantAndEquipmentOtherNet	1689424000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Other Net PropertyPlantAndEquipmentOtherNet	1181525000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	75587000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	70633000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	6808000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	4693000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	58586000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	38224000	usd
CY2023Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	12094000	usd
CY2022Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	13572000	usd
CY2023Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	26411000	usd
CY2022Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	3045000	usd
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	89735000	usd
CY2022Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	38564000	usd
CY2023Q4	us-gaap	Assets Assets	3713776000	usd
CY2022Q4	us-gaap	Assets Assets	2876821000	usd
CY2023Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	322247000	usd
CY2022Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	331479000	usd
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	402752000	usd
CY2022Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	349126000	usd
CY2023Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	108831000	usd
CY2022Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	89166000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	13569000	usd
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	5829000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	52903000	usd
CY2022Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	34796000	usd
CY2023Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	1169000	usd
CY2022Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	1672000	usd
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	901471000	usd
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	812068000	usd
CY2023Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1170075000	usd
CY2022Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	568635000	usd
CY2023Q4	us-gaap	Accounts Payable And Accrued Liabilities Noncurrent AccountsPayableAndAccruedLiabilitiesNoncurrent	533054000	usd
CY2022Q4	us-gaap	Accounts Payable And Accrued Liabilities Noncurrent AccountsPayableAndAccruedLiabilitiesNoncurrent	478497000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	4479000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	9181000	usd
CY2023Q4	amrc	Deferred Grant Income DeferredGrantIncome	6974000	usd
CY2022Q4	amrc	Deferred Grant Income DeferredGrantIncome	7590000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	42258000	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	31703000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	82714000	usd
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CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
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CY2022Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	46623000	usd
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CY2023Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	320892000	usd
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CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	595911000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	533549000	usd
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CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	120084000	usd
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CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-17290000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	105719000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	78144000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-2047000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	62470000	usd
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.20
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.83
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.17
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.78
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.35
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52140000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	51841000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50855000	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53228000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53278000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52268000	shares
CY2023	us-gaap	Profit Loss ProfitLoss	63904000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	98549000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	80191000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-190000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	2039000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	662000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-538000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	6017000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	1574000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-3401000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-170000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2623000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	101165000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	82814000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1434000	usd
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	3623000	usd
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	9733000	usd
CY2023	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	30000	usd
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	0	usd
CY2021	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	0	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1464000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	3623000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	63476000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	73081000	usd
CY2020Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	38850000	usd
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	492813000	usd
CY2021	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	6416000	usd
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	5563000	usd
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8716000	usd
CY2021	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1364000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	2793000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-170000	usd
CY2021	amrc	Noncontrolling Interest Increase From Contributions From Noncontrolling Interest Holders NoncontrollingInterestIncreaseFromContributionsFromNoncontrollingInterestHolders	2251000	usd
CY2021	amrc	Temporary Equity Decrease From Distributions To Redeemable Noncontrolling Interest Holders TemporaryEquityDecreaseFromDistributionsToRedeemableNoncontrollingInterestHolders	1009000	usd
CY2021	amrc	Temporary Equity Accretion Of Tax Equity Financing Fee TemporaryEquityAccretionOfTaxEquityFinancingFee	116000	usd
CY2021	amrc	Stockholders Equity Adjustment For Accretion Of Tax Equity Financing Fees StockholdersEquityAdjustmentForAccretionOfTaxEquityFinancingFees	116000	usd
CY2021	amrc	Temporary Equity Call Option Exercise TemporaryEquityCallOptionExercise	3759000	usd
CY2021	us-gaap	Adjustments To Additional Paid In Capital Increase In Carrying Amount Of Redeemable Preferred Stock AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock	-2759000	usd
CY2021	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	9733000	usd
CY2021	amrc	Net Income Loss Including Portion Attributable To Noncontrolling Interest And Excluding Redeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAndExcludingRedeemableNoncontrollingInterest	70458000	usd
CY2021Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	46182000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	704264000	usd
CY2022	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	3954000	usd
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	15046000	usd
CY2022	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2009000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	6017000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-3401000	usd
CY2022	amrc	Temporary Equity Decrease From Distributions To Redeemable Noncontrolling Interest Holders TemporaryEquityDecreaseFromDistributionsToRedeemableNoncontrollingInterestHolders	1039000	usd
CY2022	amrc	Temporary Equity Accretion Of Tax Equity Financing Fee TemporaryEquityAccretionOfTaxEquityFinancingFee	109000	usd
CY2022	amrc	Stockholders Equity Adjustment For Accretion Of Tax Equity Financing Fees StockholdersEquityAdjustmentForAccretionOfTaxEquityFinancingFees	109000	usd
CY2022	amrc	Temporary Equity Call Option Exercise TemporaryEquityCallOptionExercise	2162000	usd
CY2022	us-gaap	Adjustments To Additional Paid In Capital Increase In Carrying Amount Of Redeemable Preferred Stock AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock	-1323000	usd
CY2022	amrc	Noncontrolling Interest Increase From Contributions From Noncontrolling Interest Holders NoncontrollingInterestIncreaseFromContributionsFromNoncontrollingInterestHolders	48912000	usd
CY2022	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	3533000	usd
CY2022	amrc	Net Income Loss Including Portion Attributable To Noncontrolling Interest And Excluding Redeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAndExcludingRedeemableNoncontrollingInterest	95016000	usd
CY2022Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	46623000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	873031000	usd
CY2023	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2438000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10318000	usd
CY2023	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2017000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-538000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	1574000	usd
CY2023	amrc	Temporary Equity Decrease From Distributions To Redeemable Noncontrolling Interest Holders TemporaryEquityDecreaseFromDistributionsToRedeemableNoncontrollingInterestHolders	632000	usd
CY2023	amrc	Temporary Equity Accretion Of Tax Equity Financing Fee TemporaryEquityAccretionOfTaxEquityFinancingFee	108000	usd
CY2023	amrc	Stockholders Equity Adjustment For Accretion Of Tax Equity Financing Fees StockholdersEquityAdjustmentForAccretionOfTaxEquityFinancingFees	108000	usd
CY2023	amrc	Temporary Equity Call Option Exercise TemporaryEquityCallOptionExercise	-195000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Increase In Carrying Amount Of Redeemable Preferred Stock AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock	195000	usd
CY2023	amrc	Noncontrolling Interest Increase From Contributions From Noncontrolling Interest Holders NoncontrollingInterestIncreaseFromContributionsFromNoncontrollingInterestHolders	4203000	usd
CY2023	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	30187000	usd
CY2023	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	571000	usd
CY2023	amrc	Net Income Loss Including Portion Attributable To Noncontrolling Interest And Excluding Redeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestAndExcludingRedeemableNoncontrollingInterest	63333000	usd
CY2023Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	46865000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	925886000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	63904000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	98549000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	80191000	usd
CY2023	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	59390000	usd
CY2022	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	49755000	usd
CY2021	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	43113000	usd
CY2023	us-gaap	Depreciation Depreciation	4155000	usd
CY2022	us-gaap	Depreciation Depreciation	2665000	usd
CY2021	us-gaap	Depreciation Depreciation	3143000	usd
CY2023	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	4201000	usd
CY2022	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	4211000	usd
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2849000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2366000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1858000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	321000	usd
CY2023	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	347000	usd
CY2022	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	1614000	usd
CY2021	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	0	usd
CY2023	amrc	Accretion Of Aro AccretionOfARO	258000	usd
CY2022	amrc	Accretion Of Aro AccretionOfARO	146000	usd
CY2021	amrc	Accretion Of Aro AccretionOfARO	123000	usd
CY2023	us-gaap	Goodwill Impairment Loss Net Of Tax GoodwillImpairmentLossNetOfTax	2222000	usd
CY2022	us-gaap	Goodwill Impairment Loss Net Of Tax GoodwillImpairmentLossNetOfTax	0	usd
CY2021	us-gaap	Goodwill Impairment Loss Net Of Tax GoodwillImpairmentLossNetOfTax	0	usd
CY2023	amrc	Provisionfor Doubtful Accounts Including Retainage Accounts ProvisionforDoubtfulAccountsIncludingRetainageAccounts	356000	usd
CY2022	amrc	Provisionfor Doubtful Accounts Including Retainage Accounts ProvisionforDoubtfulAccountsIncludingRetainageAccounts	-382000	usd
CY2021	amrc	Provisionfor Doubtful Accounts Including Retainage Accounts ProvisionforDoubtfulAccountsIncludingRetainageAccounts	187000	usd
CY2023	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-1710000	usd
CY2022	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-937000	usd
CY2021	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-1901000	usd
CY2023	amrc	In Kind Lease Expenses Net InKindLeaseExpensesNet	-3164000	usd
CY2022	amrc	In Kind Lease Expenses Net InKindLeaseExpensesNet	0	usd
CY2021	amrc	In Kind Lease Expenses Net InKindLeaseExpensesNet	0	usd
CY2023	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	usd
CY2022	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	usd
CY2021	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	575000	usd
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1758000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1647000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-118000	usd
CY2023	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	1108000	usd
CY2022	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	212000	usd
CY2021	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-240000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	10318000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	15046000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	8716000	usd
CY2023	amrc	Deferred Income Tax Expense Benefit Excluding Effects Of Exchange Rates On Cash DeferredIncomeTaxExpenseBenefitExcludingEffectsOfExchangeRatesOnCash	-27602000	usd
CY2022	amrc	Deferred Income Tax Expense Benefit Excluding Effects Of Exchange Rates On Cash DeferredIncomeTaxExpenseBenefitExcludingEffectsOfExchangeRatesOnCash	3918000	usd
CY2021	amrc	Deferred Income Tax Expense Benefit Excluding Effects Of Exchange Rates On Cash DeferredIncomeTaxExpenseBenefitExcludingEffectsOfExchangeRatesOnCash	-4760000	usd
CY2023	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	368000	usd
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	123000	usd
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-142000	usd
CY2023	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-52647000	usd
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-3477000	usd
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	15953000	usd
CY2023	amrc	Increase Decrease In Accounts Receivable Retainage IncreaseDecreaseInAccountsReceivableRetainage	-4337000	usd
CY2022	amrc	Increase Decrease In Accounts Receivable Retainage IncreaseDecreaseInAccountsReceivableRetainage	-4716000	usd
CY2021	amrc	Increase Decrease In Accounts Receivable Retainage IncreaseDecreaseInAccountsReceivableRetainage	12882000	usd
CY2023	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	260378000	usd
CY2022	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	259499000	usd
CY2021	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	249728000	usd
CY2023	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-581000	usd
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	5411000	usd
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	232000	usd
CY2023	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	13211000	usd
CY2022	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	272629000	usd
CY2021	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	113192000	usd
CY2023	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	41125000	usd
CY2022	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	3182000	usd
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-1770000	usd
CY2023	us-gaap	Increase Decrease In Construction Payables IncreaseDecreaseInConstructionPayables	-5486000	usd
CY2022	us-gaap	Increase Decrease In Construction Payables IncreaseDecreaseInConstructionPayables	-685000	usd
CY2021	us-gaap	Increase Decrease In Construction Payables IncreaseDecreaseInConstructionPayables	1949000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	6896000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	11327000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1870000	usd
CY2023	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	53238000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	36155000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	83473000	usd
CY2023	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	26202000	usd
CY2022	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	449000	usd
CY2021	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-693000	usd
CY2023	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	3559000	usd
CY2022	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-5074000	usd
CY2021	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-5036000	usd
CY2023	amrc	Increase Decrease In Income Taxes Receivable Payable Net IncreaseDecreaseInIncomeTaxesReceivablePayableNet	1314000	usd
CY2022	amrc	Increase Decrease In Income Taxes Receivable Payable Net IncreaseDecreaseInIncomeTaxesReceivablePayableNet	-1613000	usd
CY2021	amrc	Increase Decrease In Income Taxes Receivable Payable Net IncreaseDecreaseInIncomeTaxesReceivablePayableNet	4389000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-69991000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-338288000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-172296000	usd
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5713000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5296000	usd
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4896000	usd
CY2023	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	538418000	usd
CY2022	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	304596000	usd
CY2021	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	170277000	usd
CY2023	amrc	Payments For Investment In Maintenance Of Energy Assets PaymentsForInvestmentInMaintenanceOfEnergyAssets	7636000	usd
CY2022	amrc	Payments For Investment In Maintenance Of Energy Assets PaymentsForInvestmentInMaintenanceOfEnergyAssets	18007000	usd
CY2021	amrc	Payments For Investment In Maintenance Of Energy Assets PaymentsForInvestmentInMaintenanceOfEnergyAssets	8602000	usd
CY2023	amrc	Proceeds From Grant ProceedsFromGrant	0	usd
CY2022	amrc	Proceeds From Grant ProceedsFromGrant	0	usd
CY2021	amrc	Proceeds From Grant ProceedsFromGrant	774000	usd
CY2023	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	usd
CY2022	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	usd
CY2021	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	1672000	usd
CY2023	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	9182000	usd
CY2022	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	usd
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	14928000	usd
CY2023	amrc	Payments To Equity And Other Investments PaymentsToEquityAndOtherInvestments	5429000	usd
CY2022	amrc	Payments To Equity And Other Investments PaymentsToEquityAndOtherInvestments	0	usd
CY2021	amrc	Payments To Equity And Other Investments PaymentsToEquityAndOtherInvestments	9000000	usd
CY2023	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	565000	usd
CY2022	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	459000	usd
CY2021	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	0	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-566943000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-328358000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-205257000	usd
CY2023	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	usd
CY2022	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	usd
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	120084000	usd
CY2023	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	9315000	usd
CY2022	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	3695000	usd
CY2021	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	2919000	usd
CY2023	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	4455000	usd
CY2022	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	5963000	usd
CY2021	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	6927000	usd
CY2023	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	1866000	usd
CY2022	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	usd
CY2021	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	usd
CY2023	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-43000000	usd
CY2022	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	137900000	usd
CY2021	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-8073000	usd
CY2023	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	843498000	usd
CY2022	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	468476000	usd
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	185994000	usd
CY2023	amrc	Proceeds From Federal Espc Funding ProceedsFromFederalESPCFunding	154338000	usd
CY2022	amrc	Proceeds From Federal Espc Funding ProceedsFromFederalESPCFunding	238360000	usd
CY2021	amrc	Proceeds From Federal Espc Funding ProceedsFromFederalESPCFunding	159216000	usd
CY2023	amrc	Proceeds From Sale Of Investment Assets ProceedsFromSaleOfInvestmentAssets	14512000	usd
CY2022	amrc	Proceeds From Sale Of Investment Assets ProceedsFromSaleOfInvestmentAssets	14341000	usd
CY2021	amrc	Proceeds From Sale Of Investment Assets ProceedsFromSaleOfInvestmentAssets	2033000	usd
CY2023	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	0	usd
CY2022	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	839000	usd
CY2021	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	1000000	usd
CY2023	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	3738000	usd
CY2022	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	32706000	usd
CY2021	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	usd
CY2023	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	21842000	usd
CY2022	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	usd
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	usd
CY2023	us-gaap	Payments Of Distributions To Affiliates PaymentsOfDistributionsToAffiliates	658000	usd
CY2022	us-gaap	Payments Of Distributions To Affiliates PaymentsOfDistributionsToAffiliates	1128000	usd
CY2021	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	1399000	usd
CY2023	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	303057000	usd
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	161857000	usd
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	98200000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	640803000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	730227000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	365461000	usd
CY2023	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-81000	usd
CY2022	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-747000	usd
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	309000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	3788000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	62834000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-11783000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	149888000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	87054000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	98837000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	153676000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	149888000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	80251000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	32954000	usd
CY2023	us-gaap	Income Taxes Paid IncomeTaxesPaid	3834000	usd
CY2022	amrc	Noncashor Part Noncash Acquisition Financing Receivable Acquired NoncashorPartNoncashAcquisitionFinancingReceivableAcquired	293427000	usd
CY2021	amrc	Noncashor Part Noncash Acquisition Financing Receivable Acquired NoncashorPartNoncashAcquisitionFinancingReceivableAcquired	67286000	usd
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	88793000	usd
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	37064000	usd
CY2023	amrc	Non Cash Contributions From Non Controlling Interest NonCashContributionsFromNonControllingInterest	464000	usd
CY2022	amrc	Non Cash Contributions From Non Controlling Interest NonCashContributionsFromNonControllingInterest	16206000	usd
CY2021	amrc	Non Cash Contributions From Non Controlling Interest NonCashContributionsFromNonControllingInterest	0	usd
CY2023	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	82964000	usd
CY2022	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	usd
CY2021	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	usd
CY2023	amrc	Noncash Investing And Financing Activities Investment Fund Call Option Exercise NoncashInvestingAndFinancingActivitiesInvestmentFundCallOptionExercise	0	usd
CY2022	amrc	Noncash Investing And Financing Activities Investment Fund Call Option Exercise NoncashInvestingAndFinancingActivitiesInvestmentFundCallOptionExercise	1323000	usd
CY2021	amrc	Noncash Investing And Financing Activities Investment Fund Call Option Exercise NoncashInvestingAndFinancingActivitiesInvestmentFundCallOptionExercise	2759000	usd
CY2023	amrc	Investment Tax Credit Benefit Amount InvestmentTaxCreditBenefitAmount	20970000	usd
CY2023	us-gaap	Nature Of Operations NatureOfOperations	DESCRIPTION OF BUSINESS<div style="margin-bottom:9pt;margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Ameresco, Inc. (including its subsidiaries, the “Company,” “Ameresco”, “we,” “our,” or “us”) was organized as a Delaware corporation on April 25, 2000. We are a leading cleantech integrator and renewable energy asset developer, owner and operator. Our comprehensive portfolio includes energy efficiency, infrastructure upgrades, asset sustainability, and renewable energy solutions delivered to clients throughout North America and Europe. We provide solutions, both services and products, which enable our customers to reduce their energy consumption, lower their operating and maintenance costs and realize environmental benefits. Our comprehensive set of solutions includes upgrades to a facility’s energy infrastructure and the development, construction, and operation of distributed energy resources. We also sell certain solar photovoltaic (“solar PV”) equipment worldwide and operate in the United States, Canada and Europe. We have successfully completed energy saving, environmentally responsible projects with Federal, state and local governments, healthcare and educational institutions, housing authorities, and commercial and industrial customers. </span></div><div style="margin-bottom:9pt;margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">We are 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 our energy assets, and 3) direct payment for solar PV equipment and systems.</span></div>
CY2023Q4	amrc	Investment Funds Purchase Of Solar Energy Systems InvestmentFundsPurchaseOfSolarEnergySystems	3	investment_fund
CY2023	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Reclassification and Rounding</span></div><div style="margin-bottom:9pt;margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Certain prior period amounts were reclassified to conform to the presentation in the current period. We round amounts in the consolidated financial statements to thousands and calculate all percentages and per-share data from the underlying whole-dollar amounts. Thus, certain amounts may not foot, crossfoot, or recalculate based on reported numbers due to rounding.</span></div>
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-bottom:9pt;margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">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 consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Changes in circumstances could cause actual results to differ materially from those estimates. The 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 credit losses, realization of project development costs, leases, fair value of derivative financial instruments, accounting for business acquisitions, stock-based awards, impairment of goodwill and long-lived assets, income taxes, and potential liability in conjunction with contingent consideration.</span></div>
CY2023	amrc	Loss Contingency Self Insurance Maximum Exposure Per Participant LossContingencySelfInsuranceMaximumExposurePerParticipant	200000
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	911000	usd
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	2266000	usd
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	356000	usd
CY2022	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-382000	usd
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	187000	usd
CY2023	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	364000	usd
CY2022	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	970000	usd
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	190000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	911000	usd
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	2263000	usd
CY2022	amrc	Contracts Receivable Retainage Allowancesand Reserves ContractsReceivableRetainageAllowancesandReserves	0	usd
CY2023	amrc	Contracts Receivable Retainage Allowancesand Reserves ContractsReceivableRetainageAllowancesandReserves	0	usd
CY2023Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	74454000	usd
CY2022Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	16877000	usd
CY2023Q4	us-gaap	Deferred Costs Current DeferredCostsCurrent	38240000	usd
CY2022Q4	us-gaap	Deferred Costs Current DeferredCostsCurrent	13556000	usd
CY2023Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	10697000	usd
CY2022Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	8184000	usd
CY2023Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	123391000	usd
CY2022Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	38617000	usd
CY2023Q4	us-gaap	Transfers Of Financial Assets Accounted For As Sale Initial Fair Value Of Assets Obtained As Proceeds TransfersOfFinancialAssetsAccountedForAsSaleInitialFairValueOfAssetsObtainedAsProceeds	39923000	usd
CY2023	amrc	Servicing Asset Factoring Fees ServicingAssetFactoringFees	5844000	usd
CY2023	amrc	Investment Tax Credit Benefit Amount InvestmentTaxCreditBenefitAmount	20970000	usd
CY2023	us-gaap	Investment Tax Credit InvestmentTaxCredit	8618000	usd
CY2023Q4	amrc	In Use And Franchise Tax Payable InUseAndFranchiseTaxPayable	39974000	usd
CY2022Q4	amrc	In Use And Franchise Tax Payable InUseAndFranchiseTaxPayable	47041000	usd
CY2023	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	10687000	usd
CY2022	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	10904000	usd
CY2021	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	11726000	usd
CY2023Q4	amrc	Investment Funds Purchase Of Solar Energy Systems InvestmentFundsPurchaseOfSolarEnergySystems	3	investment_fund
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1374633000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1824422000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1215697000	usd
CY2023	amrc	Revenues Percentage Of Revenue Recognized Over Time RevenuesPercentageOfRevenueRecognizedOverTime	0.95
CY2022	amrc	Revenues Percentage Of Revenue Recognized Over Time RevenuesPercentageOfRevenueRecognizedOverTime	0.96
CY2021	amrc	Revenues Percentage Of Revenue Recognized Over Time RevenuesPercentageOfRevenueRecognizedOverTime	0.95
CY2023Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	153362000	usd
CY2022Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	174009000	usd
CY2023Q4	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	33826000	usd
CY2022Q4	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	38057000	usd
CY2023Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	636163000	usd
CY2022Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	576363000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	52903000	usd
CY2022Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	34796000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	18393000	usd
CY2022Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	7617000	usd
CY2023Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	71296000	usd
CY2022Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	42413000	usd
CY2023	amrc	Contract With Customer Asset Revenue Recognized ContractWithCustomerAssetRevenueRecognized	940317000	usd
CY2023	us-gaap	Contract With Customer Asset Reclassified To Receivable ContractWithCustomerAssetReclassifiedToReceivable	886788000	usd
CY2023	amrc	Contract With Customer Liability Including New Contract Revenue Recognized ContractWithCustomerLiabilityIncludingNewContractRevenueRecognized	160713000	usd
CY2023	amrc	Contract With Customer Liability Billings ContractWithCustomerLiabilityBillings	184174000	usd
CY2022	amrc	Contract With Customer Asset Revenue Recognized ContractWithCustomerAssetRevenueRecognized	1371455000	usd
CY2022	us-gaap	Contract With Customer Asset Reclassified To Receivable ContractWithCustomerAssetReclassifiedToReceivable	1103926000	usd
CY2022	amrc	Contract With Customer Liability Including New Contract Revenue Recognized ContractWithCustomerLiabilityIncludingNewContractRevenueRecognized	135506000	usd
CY2022	amrc	Contract With Customer Liability Billings ContractWithCustomerLiabilityBillings	129749000	usd
CY2023Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	2545403000	usd
CY2023Q4	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.32
CY2023Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2023	amrc	Revenue From Contract With Customer Contract Term RevenueFromContractWithCustomerContractTerm	P25Y
CY2023Q4	us-gaap	Capitalized Contract Cost Gross CapitalizedContractCostGross	1735000	usd
CY2022Q4	us-gaap	Capitalized Contract Cost Gross CapitalizedContractCostGross	1735000	usd
CY2023	amrc	Capitalized Contract Cost Project Development Costs CapitalizedContractCostProjectDevelopmentCosts	13051000	usd
CY2022	amrc	Capitalized Contract Cost Project Development Costs CapitalizedContractCostProjectDevelopmentCosts	15507000	usd
CY2021	amrc	Capitalized Contract Cost Project Development Costs CapitalizedContractCostProjectDevelopmentCosts	12737000	usd
CY2021	us-gaap	Capitalized Contract Cost Impairment Loss CapitalizedContractCostImpairmentLoss	0	usd
CY2023	us-gaap	Capitalized Contract Cost Impairment Loss CapitalizedContractCostImpairmentLoss	0	usd
CY2022	us-gaap	Capitalized Contract Cost Impairment Loss CapitalizedContractCostImpairmentLoss	0	usd
CY2023Q4	amrc	Number Of Reporting Units Impaired NumberOfReportingUnitsImpaired	1	reporting_unit
CY2023Q4	amrc	Reporting Unit Percentage Of Carrying Value In Excess Of Fair Value Amount ReportingUnitPercentageOfCarryingValueInExcessOfFairValueAmount	0.02
CY2023	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	1644000	usd
CY2023	us-gaap	Goodwill Impairment Loss Net Of Tax GoodwillImpairmentLossNetOfTax	2222000	usd
CY2023Q4	us-gaap	Reporting Unit Percentage Of Fair Value In Excess Of Carrying Amount ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount	0.16
CY2022Q4	us-gaap	Reporting Unit Percentage Of Fair Value In Excess Of Carrying Amount ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount	0.20
CY2022	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2021Q4	us-gaap	Goodwill Goodwill	71157000	usd
CY2022	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	389000	usd
CY2022	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-913000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	70633000	usd
CY2023	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	6855000	usd
CY2023	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	-165000	usd
CY2023	us-gaap	Goodwill Impairment Loss Net Of Tax GoodwillImpairmentLossNetOfTax	2222000	usd
CY2023	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	486000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	75587000	usd
CY2022Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	1016000	usd
CY2023Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	3238000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	37147000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	32277000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	30339000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	27584000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	6808000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	4693000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2366000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1858000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	321000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	42960000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	36362000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	25565000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	20655000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	17395000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	15707000	usd
CY2023	us-gaap	Depreciation Depreciation	4155000	usd
CY2022	us-gaap	Depreciation Depreciation	2665000	usd
CY2021	us-gaap	Depreciation Depreciation	3143000	usd
CY2023	amrc	Investment Tax Credit Benefit Amount InvestmentTaxCreditBenefitAmount	20970000	usd
CY2022	amrc	Business Combination Number Of Projects Acquired BusinessCombinationNumberOfProjectsAcquired	2	project
CY2022	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	11022000	usd
CY2023	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	59390000	usd
CY2022	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	49755000	usd
CY2021	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	43113000	usd
CY2023	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	43561000	usd
CY2022	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	13050000	usd
CY2021	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	2814000	usd
CY2021Q3	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	1901000	usd
CY2023Q4	amrc	Number Of Espc Projects NumberOfESPCProjects	6	project
CY2022Q4	amrc	Number Of Espc Projects NumberOfESPCProjects	5	project
CY2023Q4	us-gaap	Asset Retirement Obligation Legally Restricted Assets Fair Value AssetRetirementObligationLegallyRestrictedAssetsFairValue	4800000	usd
CY2022Q4	us-gaap	Asset Retirement Obligation Legally Restricted Assets Fair Value AssetRetirementObligationLegallyRestrictedAssetsFairValue	2359000	usd
CY2023Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	5960000	usd
CY2022Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	3052000	usd
CY2023	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	258000	usd
CY2022	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	146000	usd
CY2021	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	123000	usd
CY2023	amrc	Lessee Operating Lease Number Of Renewal Options LesseeOperatingLeaseNumberOfRenewalOptions	1	renewal_option
CY2023	us-gaap	Operating Lease Expense OperatingLeaseExpense	10504000	usd
CY2022	us-gaap	Operating Lease Expense OperatingLeaseExpense	9199000	usd
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	9740000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	58586000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	38224000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	13569000	usd
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	5829000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	42258000	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	31703000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	55827000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	37532000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P18Y
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P13Y
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.066
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.060
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	27262000	usd
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	29365000	usd
CY2023Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	871000	usd
CY2022Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1992000	usd
CY2023Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	13057000	usd
CY2022Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	14068000	usd
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	13928000	usd
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	16060000	usd
CY2023Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P13Y
CY2022Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P14Y
CY2023Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.1205
CY2022Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.121
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	9416000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	8372000	usd
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	8780000	usd
CY2023	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2103000	usd
CY2022	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2104000	usd
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2129000	usd
CY2023	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1804000	usd
CY2022	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	2147000	usd
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	2541000	usd
CY2023	amrc	Financing Lease Cost FinancingLeaseCost	3907000	usd
CY2022	amrc	Financing Lease Cost FinancingLeaseCost	4251000	usd
CY2021	amrc	Financing Lease Cost FinancingLeaseCost	4670000	usd
CY2023	us-gaap	Lease Cost LeaseCost	13323000	usd
CY2022	us-gaap	Lease Cost LeaseCost	12623000	usd
CY2021	us-gaap	Lease Cost LeaseCost	13450000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	10724000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	7978000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	25225000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	4872000	usd
CY2023	amrc	Operating Lease Liability Non Monetary Lease Transactions OperatingLeaseLiabilityNonMonetaryLeaseTransactions	13941000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	16390000	usd
CY2023Q4	amrc	Long Term Debt And Finance Leases Maturity Year One LongTermDebtAndFinanceLeasesMaturityYearOne	324423000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	2317000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	11068000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	2213000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	5813000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	2054000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	4781000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	1922000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	4186000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	1955000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	79489000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	15935000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	121727000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	26396000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	65900000	usd
CY2023Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	12468000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	55827000	usd
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	13928000	usd
CY2023Q4	amrc	Lessee Operating Lease Lease Not Yet Commenced Liability To Be Paid LesseeOperatingLeaseLeaseNotYetCommencedLiabilityToBePaid	10500000	usd
CY2023	amrc	Number Of Lease Liabilities NumberOfLeaseLiabilities	2	lease_liability
CY2023Q1	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P37Y
CY2023Q3	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P30Y
CY2023	amrc	Sale Leaseback Transaction Net Amortization Expense SaleLeasebackTransactionNetAmortizationExpense	230000	usd
CY2022	amrc	Sale Leaseback Transaction Net Amortization Expense SaleLeasebackTransactionNetAmortizationExpense	383000	usd
CY2021	amrc	Sale Leaseback Transaction Net Amortization Expense SaleLeasebackTransactionNetAmortizationExpense	230000	usd
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	13928000	usd
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	16060000	usd
CY2023Q4	amrc	Long Term Debt And Capital Lease Obligations Gross LongTermDebtAndCapitalLeaseObligationsGross	1514304000	usd
CY2022Q4	amrc	Long Term Debt And Capital Lease Obligations Gross LongTermDebtAndCapitalLeaseObligationsGross	915677000	usd
CY2023Q4	amrc	Long Term Debt And Finance Lease Obligations Current LongTermDebtAndFinanceLeaseObligationsCurrent	322247000	usd
CY2022Q4	amrc	Long Term Debt And Finance Lease Obligations Current LongTermDebtAndFinanceLeaseObligationsCurrent	331479000	usd
CY2023Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	21982000	usd
CY2022Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	15563000	usd
CY2023Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1170075000	usd
CY2022Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	568635000	usd
CY2023Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	12468000	usd
CY2022Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	14212000	usd
CY2023Q4	amrc	Long Term Debt And Finance Leases Maturity Year Two LongTermDebtAndFinanceLeasesMaturityYearTwo	298569000	usd
CY2023Q4	amrc	Long Term Debt And Finance Leases Maturity Year Three LongTermDebtAndFinanceLeasesMaturityYearThree	340080000	usd
CY2023Q4	amrc	Long Term Debt And Finance Leases Maturity Year Four LongTermDebtAndFinanceLeasesMaturityYearFour	62162000	usd
CY2023Q4	amrc	Long Term Debt And Finance Leases Maturity Year Five LongTermDebtAndFinanceLeasesMaturityYearFive	59250000	usd
CY2023Q4	amrc	Long Term Debt And Finance Leases Maturity After Year Five LongTermDebtAndFinanceLeasesMaturityAfterYearFive	429820000	usd
CY2023Q4	amrc	Long Term Debt And Finance Leases LongTermDebtAndFinanceLeases	1514304000	usd
CY2022Q1	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	96000	usd
CY2023Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	12868000	usd
CY2023	amrc	Gain Loss From Termination Of Derivative Contracts GainLossFromTerminationOfDerivativeContracts	694000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	30211000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	98004000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	74256000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	8058000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	7715000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	3888000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	38269000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	105719000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	78144000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	34000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-722000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-779000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	372000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	733000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1779000	usd
CY2023	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1255000	usd
CY2022	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1202000	usd
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	844000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1661000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1213000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1844000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-22677000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2528000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-8025000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-5657000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2300000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	3561000	usd
CY2023	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1038000	usd
CY2022	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1129000	usd
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	573000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-27296000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	5957000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3891000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-25635000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7170000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-2047000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	4137000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	3306000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	5906000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	4111000	usd
CY2023Q4	amrc	Deferred Tax Assets Tax Deferred Expense Sale Leasebacks And Other Accruals DeferredTaxAssetsTaxDeferredExpenseSaleLeasebacksAndOtherAccruals	49300000	usd
CY2022Q4	amrc	Deferred Tax Assets Tax Deferred Expense Sale Leasebacks And Other Accruals DeferredTaxAssetsTaxDeferredExpenseSaleLeasebacksAndOtherAccruals	32945000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	28565000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	18395000	usd
CY2023Q4	amrc	Deferred Tax Assets Interest Limitation DeferredTaxAssetsInterestLimitation	8273000	usd
CY2022Q4	amrc	Deferred Tax Assets Interest Limitation DeferredTaxAssetsInterestLimitation	0	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	82827000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	71433000	usd
CY2023Q4	amrc	Deferred Tax Assets Deferred Revenue DeferredTaxAssetsDeferredRevenue	2114000	usd
CY2022Q4	amrc	Deferred Tax Assets Deferred Revenue DeferredTaxAssetsDeferredRevenue	2132000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	181122000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	132322000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3704000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3621000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	177418000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	128701000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	137966000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	122762000	usd
CY2023Q4	amrc	Deferred Tax Liabilities Contract Refinancing DeferredTaxLiabilitiesContractRefinancing	2166000	usd
CY2022Q4	amrc	Deferred Tax Liabilities Contract Refinancing DeferredTaxLiabilitiesContractRefinancing	1640000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1324000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	0	usd
CY2023Q4	amrc	Deferred Tax Liabilities Outside Basis Difference DeferredTaxLiabilitiesOutsideBasisDifference	6599000	usd
CY2022Q4	amrc	Deferred Tax Liabilities Outside Basis Difference DeferredTaxLiabilitiesOutsideBasisDifference	5038000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	841000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	1347000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	155486000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	134837000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	21932000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6136000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3704000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3621000	usd
CY2023Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	195694000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	38269000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	105719000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	78144000	usd
CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	8036000	usd
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	22201000	usd
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	16410000	usd
CY2023	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-774000	usd
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3844000	usd
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2648000	usd
CY2023	amrc	Income Tax Reconciliation Nondeductible Expense Deferred Rate Change Net IncomeTaxReconciliationNondeductibleExpenseDeferredRateChangeNet	-3213000	usd
CY2022	amrc	Income Tax Reconciliation Nondeductible Expense Deferred Rate Change Net IncomeTaxReconciliationNondeductibleExpenseDeferredRateChangeNet	-575000	usd
CY2021	amrc	Income Tax Reconciliation Nondeductible Expense Deferred Rate Change Net IncomeTaxReconciliationNondeductibleExpenseDeferredRateChangeNet	-502000	usd
CY2023	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	667000	usd
CY2022	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	2198000	usd
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	2572000	usd
CY2023	amrc	Effective Income Tax Rate Reconciliation Reservefor Uncertain Tax Positions Amount EffectiveIncomeTaxRateReconciliationReserveforUncertainTaxPositionsAmount	-200000	usd
CY2022	amrc	Effective Income Tax Rate Reconciliation Reservefor Uncertain Tax Positions Amount EffectiveIncomeTaxRateReconciliationReserveforUncertainTaxPositionsAmount	59000	usd
CY2021	amrc	Effective Income Tax Rate Reconciliation Reservefor Uncertain Tax Positions Amount EffectiveIncomeTaxRateReconciliationReserveforUncertainTaxPositionsAmount	286000	usd
CY2023	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	4000	usd
CY2022	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	353000	usd
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-4618000	usd
CY2023	amrc	Income Tax Reconciliation Nondeductible Expense Energy Efficiency Preferences IncomeTaxReconciliationNondeductibleExpenseEnergyEfficiencyPreferences	-30359000	usd
CY2022	amrc	Income Tax Reconciliation Nondeductible Expense Energy Efficiency Preferences IncomeTaxReconciliationNondeductibleExpenseEnergyEfficiencyPreferences	-21410000	usd
CY2021	amrc	Income Tax Reconciliation Nondeductible Expense Energy Efficiency Preferences IncomeTaxReconciliationNondeductibleExpenseEnergyEfficiencyPreferences	-17639000	usd
CY2023	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	458000	usd
CY2022	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	37000	usd
CY2021	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	4000	usd
CY2023	amrc	Effective Income Tax Rate Reconciliation Adjustment State Taxes Amount EffectiveIncomeTaxRateReconciliationAdjustmentStateTaxesAmount	-66000	usd
CY2022	amrc	Effective Income Tax Rate Reconciliation Adjustment State Taxes Amount EffectiveIncomeTaxRateReconciliationAdjustmentStateTaxesAmount	0	usd
CY2021	amrc	Effective Income Tax Rate Reconciliation Adjustment State Taxes Amount EffectiveIncomeTaxRateReconciliationAdjustmentStateTaxesAmount	0	usd
CY2023	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	227000	usd
CY2022	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	411000	usd
CY2021	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	2546000	usd
CY2023	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	81000	usd
CY2022	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-159000	usd
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	337000	usd
CY2023	amrc	Income Tax Reconciliation Nondeductible Expense Miscellaneous IncomeTaxReconciliationNondeductibleExpenseMiscellaneous	-42000	usd
CY2022	amrc	Income Tax Reconciliation Nondeductible Expense Miscellaneous IncomeTaxReconciliationNondeductibleExpenseMiscellaneous	1033000	usd
CY2021	amrc	Income Tax Reconciliation Nondeductible Expense Miscellaneous IncomeTaxReconciliationNondeductibleExpenseMiscellaneous	1001000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-25635000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7170000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-2047000	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2023	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.020
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.036
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.034
CY2023	amrc	Effective Income Tax Rate Reconciliation State Impact Of Deferred Rate Change Net EffectiveIncomeTaxRateReconciliationStateImpactOfDeferredRateChangeNet	-0.084
CY2022	amrc	Effective Income Tax Rate Reconciliation State Impact Of Deferred Rate Change Net EffectiveIncomeTaxRateReconciliationStateImpactOfDeferredRateChangeNet	-0.005
CY2021	amrc	Effective Income Tax Rate Reconciliation State Impact Of Deferred Rate Change Net EffectiveIncomeTaxRateReconciliationStateImpactOfDeferredRateChangeNet	-0.006
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.017
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.021
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.033
CY2023	amrc	Effective Income Tax Rate Reconciliation Reservefor Uncertain Tax Positions Percent EffectiveIncomeTaxRateReconciliationReserveforUncertainTaxPositionsPercent	-0.005
CY2022	amrc	Effective Income Tax Rate Reconciliation Reservefor Uncertain Tax Positions Percent EffectiveIncomeTaxRateReconciliationReserveforUncertainTaxPositionsPercent	0.001
CY2021	amrc	Effective Income Tax Rate Reconciliation Reservefor Uncertain Tax Positions Percent EffectiveIncomeTaxRateReconciliationReserveforUncertainTaxPositionsPercent	0.004
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.003
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.059
CY2023	amrc	Effective Income Tax Rate Reconciliation Energy Efficiency Preferences EffectiveIncomeTaxRateReconciliationEnergyEfficiencyPreferences	-0.793
CY2022	amrc	Effective Income Tax Rate Reconciliation Energy Efficiency Preferences EffectiveIncomeTaxRateReconciliationEnergyEfficiencyPreferences	-0.203
CY2021	amrc	Effective Income Tax Rate Reconciliation Energy Efficiency Preferences EffectiveIncomeTaxRateReconciliationEnergyEfficiencyPreferences	-0.232
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.012
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0
CY2023	amrc	Effective Income Tax Rate Reconciliation Adjustment State Taxes Percent EffectiveIncomeTaxRateReconciliationAdjustmentStateTaxesPercent	-0.002
CY2022	amrc	Effective Income Tax Rate Reconciliation Adjustment State Taxes Percent EffectiveIncomeTaxRateReconciliationAdjustmentStateTaxesPercent	0
CY2021	amrc	Effective Income Tax Rate Reconciliation Adjustment State Taxes Percent EffectiveIncomeTaxRateReconciliationAdjustmentStateTaxesPercent	0
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.006
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.004
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.033
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.002
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.002
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.004
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.001
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.011
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.019
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.670
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.068
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.026
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	900000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	900000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	100000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	usd
CY2023	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	200000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	800000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	900000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	310000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	450000	usd
CY2022	amrc	Earningswith No Repatriation Tax EarningswithNoRepatriationTax	0	usd
CY2023	amrc	Earningswith No Repatriation Tax EarningswithNoRepatriationTax	0	usd
CY2023	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	22000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	22000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	14000	usd
CY2023	amrc	Number Of Investment Funds NumberOfInvestmentFunds	5	investment_fund
CY2023Q4	amrc	Investment Funds Purchase Of Solar Energy Systems InvestmentFundsPurchaseOfSolarEnergySystems	3	investment_fund
CY2023Q4	amrc	Number Of Joint Ventures NumberOfJointVentures	7	joint_venture
CY2022Q4	amrc	Number Of Joint Ventures NumberOfJointVentures	5	joint_venture
CY2023	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	5554000	usd
CY2023Q4	amrc	Equity Method Investments Venture Investments Investment Position Net Asset Liability EquityMethodInvestmentsVentureInvestmentsInvestmentPositionNetAssetLiability	18709000	usd
CY2022Q4	amrc	Equity Method Investments Venture Investments Investment Position Net Asset Liability EquityMethodInvestmentsVentureInvestmentsInvestmentPositionNetAssetLiability	10855000	usd
CY2023	amrc	Variable Interest Entity Investor Contributed Capital Balance Percentage VariableInterestEntityInvestorContributedCapitalBalancePercentage	0.07
CY2023	amrc	Variable Interest Entity Remaining Investor Contributed Capital Balance Percentage VariableInterestEntityRemainingInvestorContributedCapitalBalancePercentage	0.05
CY2023	amrc	Variable Interest Entity Remaining Investor Contributed Capital Balance Percentage VariableInterestEntityRemainingInvestorContributedCapitalBalancePercentage	0.05
CY2022Q4	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	839000	usd
CY2023	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	80000000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	62470000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	94926000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	70458000	usd
CY2023	amrc	Adjustment For Accretion Of Tax Equity Financing Fees AdjustmentForAccretionOfTaxEquityFinancingFees	108000	usd
CY2022	amrc	Adjustment For Accretion Of Tax Equity Financing Fees AdjustmentForAccretionOfTaxEquityFinancingFees	116000	usd
CY2021	amrc	Adjustment For Accretion Of Tax Equity Financing Fees AdjustmentForAccretionOfTaxEquityFinancingFees	116000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	62362000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	94810000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	70342000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52140000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	51841000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50855000	shares
CY2023	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1087000	shares
CY2022	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1437000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1413000	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53228000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53278000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52268000	shares
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.20
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.83
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.38
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.17
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.78
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.35
CY2023	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1707000	shares
CY2022	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1108000	shares
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1443000	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4533000	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	45.799
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	170000	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	41.871
CY2023	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	246000	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	9.900
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	193000	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	62.365
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	9000	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	63.311
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4255000	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	46.932
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y7M6D
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	27539000	usd
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1867000	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	25.241
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y3M18D
CY2023Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	25775000	usd
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	2387000	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice	63.900
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1	P7Y7M6D
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue	1764000	usd
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	8511000	usd
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	9775000	usd
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	33494000	usd
CY2023	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2438000	usd
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	3954000	usd
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5563000	usd
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	23.99
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	37.87
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	28.94
CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10318000	usd
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	15046000	usd
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8716000	usd
CY2023	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1102000	usd
CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	659000	usd
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4932000	usd
CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8642000	usd
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	7670000	usd
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6846000	usd
CY2021Q4	us-gaap	Loss Contingency Damages Paid Value LossContingencyDamagesPaidValue	89000000	usd
CY2017Q4	us-gaap	Loss Contingency Number Of Defendants LossContingencyNumberOfDefendants	9	contractor
CY2023Q4	us-gaap	Noncurrent Assets NoncurrentAssets	1706819000	usd
CY2022Q4	us-gaap	Noncurrent Assets NoncurrentAssets	1197232000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1374633000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1824422000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1215697000	usd
CY2023	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	1108000	usd
CY2022	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	906000	usd
CY2021	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-240000	usd
CY2023	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-36169000	usd
CY2022	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-26423000	usd
CY2021	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-14361000	usd
CY2023	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	4201000	usd
CY2022	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	4211000	usd
CY2021	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2849000	usd
CY2023	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	581000	usd
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-144000	usd
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-852000	usd
CY2023	amrc	Government Incentives GovernmentIncentives	576000	usd
CY2022	amrc	Government Incentives GovernmentIncentives	2599000	usd
CY2021	amrc	Government Incentives GovernmentIncentives	1012000	usd
CY2023	amrc	Servicing Asset Factoring Fees ServicingAssetFactoringFees	5844000	usd
CY2022	amrc	Servicing Asset Factoring Fees ServicingAssetFactoringFees	0	usd
CY2021	amrc	Servicing Asset Factoring Fees ServicingAssetFactoringFees	0	usd
CY2023	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-43949000	usd
CY2022	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-27273000	usd
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-17290000	usd
CY2023Q4	amrc	Deferred Financing Costs Amortization Next Twelve Months DeferredFinancingCostsAmortizationNextTwelveMonths	5801000	usd
CY2023Q4	amrc	Deferred Financing Costs Amortization Year Two DeferredFinancingCostsAmortizationYearTwo	3158000	usd
CY2023Q4	amrc	Deferred Financing Costs Amortization Year Three DeferredFinancingCostsAmortizationYearThree	2363000	usd
CY2023Q4	amrc	Deferred Financing Costs Amortization Year Four DeferredFinancingCostsAmortizationYearFour	1378000	usd
CY2023Q4	amrc	Deferred Financing Costs Amortization Year Five DeferredFinancingCostsAmortizationYearFive	1245000	usd
CY2023Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	1465000	usd
CY2022Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	3800000	usd
CY2022Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	4158000	usd
CY2021Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	2838000	usd
CY2023	amrc	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Remeasurement Adjustment FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityRemeasurementAdjustment	0	usd
CY2022	amrc	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Remeasurement Adjustment FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityRemeasurementAdjustment	-19000	usd
CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	347000	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	1614000	usd
CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	3040000	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	275000	usd
CY2023Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	1465000	usd
CY2022Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	4158000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1374633000	usd
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1758000	usd
CY2023	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	1108000	usd
CY2023	us-gaap	Interest Expense InterestExpense	26922000	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	64129000	usd
CY2023	amrc	Income Before Income Taxes And Unallocated Corporate Expenses IncomeBeforeIncomeTaxesAndUnallocatedCorporateExpenses	106641000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1824422000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1647000	usd
CY2022	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	212000	usd
CY2022	us-gaap	Interest Expense InterestExpense	17775000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	52432000	usd
CY2022	amrc	Income Before Income Taxes And Unallocated Corporate Expenses IncomeBeforeIncomeTaxesAndUnallocatedCorporateExpenses	176899000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1215697000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-118000	usd
CY2021	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-240000	usd
CY2021	us-gaap	Interest Expense InterestExpense	14599000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	44757000	usd
CY2021	amrc	Income Before Income Taxes And Unallocated Corporate Expenses IncomeBeforeIncomeTaxesAndUnallocatedCorporateExpenses	125505000	usd
CY2023	amrc	Disposal Group Including Discontinued Operation Energy Asset Projects DisposalGroupIncludingDiscontinuedOperationEnergyAssetProjects	5	energyasset
CY2023Q4	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023Q4	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2023Q4	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false

Files In Submission

Name	View Source	Status
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0001488139-24-000014-index.html	Edgar Link	pending
0001488139-24-000014.txt	Edgar Link	pending
0001488139-24-000014-xbrl.zip	Edgar Link	pending
ameresco-formofrsuagreem.htm	Edgar Link	pending
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amrc-20231231_pre.xml	Edgar Link	unprocessable

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$AMRC
Ameresco, Inc. Stock $amrc

2023 Q4 Form 10-K Financial Statement

#000148813924000014 Filed on February 29, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AMRC Ameresco, Inc. Stock $amrc

2023 Q4 Form 10-K Financial Statement

#000148813924000014 Filed on February 29, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AMRC
Ameresco, Inc. Stock $amrc