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Summary of Significant Accounting Policies - Principles of Consolidation (Details)	Dec. 31, 2024 investment_fund
Accounting Policies [Abstract]
Investment funds formed to fund the purchase of solar energy systems	1

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- Definition

Investment Funds, Purchase Of Solar Energy Systems

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No definition available.

+ Details

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

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- References

No definition available.

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