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Summary of Significant Accounting Policies - Use of Estimates (Details) $ / participant in Thousands	12 Months Ended
	Dec. 31, 2024 $ / participant
Accounting Policies [Abstract]
Maximum exposure, per participant	200

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- Definition

Loss Contingency, Self Insurance, Maximum Exposure, Per Participant

+ References

No definition available.

+ Details

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Namespace Prefix:	amrc_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

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