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Summary of Significant Accounting Policies - Project Development Costs  (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Product development cost included in other long-term assets	$ 0	$ 2,217,000

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- Definition

Capitalized Project Development Costs, Noncurrent

+ References

No definition available.

+ Details

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Namespace Prefix:	amrc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- References

No definition available.

+ Details

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