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REDEEMABLE NON-CONTROLLING INTERESTS (Details) - fund	Sep. 30, 2025	Dec. 31, 2024
Noncontrolling Interest [Abstract]
Investment funds formed to fund the purchase of solar energy systems	1	1

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- Definition

Investment Funds, Purchase Of Solar Energy Systems

+ References

No definition available.

+ Details

Name:	amrc_InvestmentFundsPurchaseOfSolarEnergySystems
Namespace Prefix:	amrc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_NoncontrollingInterestAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration