Ameresco, Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Cover
- Cover Page
Financial Statements
Notes to Financial Statements
Accounting Policies
- SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)
Notes Tables
Notes Details

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)

v3.26.3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($) $ in Thousands	Aug. 25, 2026	May 12, 2026	May 04, 2026	Jun. 10, 2025
Neogenyx Fuels LLC
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Equity interest in joint venture		70.00%
HA Sustainable Infrastructure Capital, Inc.
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
JV investor investment in joint venture			$ 400,000
HA Sustainable Infrastructure Capital, Inc.
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
JV investor investment in joint venture	$ 66,000	$ 400,000
Neogenyx Fuels LLC \| HA Sustainable Infrastructure Capital, Inc.
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Equity method investment, ownership percentage		30.00%
Maximum \| Loss of Deposits From Powin Bankruptcy
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Loss contingency accrual				$ 10,000

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