Cover
Cover - USD ($) | 12 Months Ended | ||
Dec. 31, 2023 | Feb. 23, 2024 | Jun. 30, 2023 | |
Cover [Abstract] | |||
Document Type | 10-K/A | ||
Entity Incorporation, State or Country Code | DE | ||
Entity Tax Identification Number | 04-3512838 | ||
Entity Emerging Growth Company | false | ||
Document Period End Date | Dec. 31, 2023 | ||
Current Fiscal Year End Date | --12-31 | ||
Entity File Number | 001-34811 | ||
Entity Registrant Name | Ameresco, Inc. | ||
City Area Code | 508 | ||
Local Phone Number | 661-2200 | ||
Entity Well-known Seasoned Issuer | Yes | ||
Entity Voluntary Filers | No | ||
Entity Current Reporting Status | Yes | ||
Entity Interactive Data Current | Yes | ||
ICFR Auditor Attestation Flag | true | ||
Document Financial Statement Error Correction [Flag] | false | ||
Entity Shell Company | false | ||
Entity Public Float | $ 1,550,437,708 | ||
Entity Address, City or Town | Framingham | ||
Entity Address, State or Province | MA | ||
Entity Address, Address Line One | 111 Speen Street | ||
Entity Address, Address Line Two | Suite 410 | ||
Entity Address, Postal Zip Code | 01701 | ||
Entity Filer Category | Large Accelerated Filer | ||
Entity Small Business | false | ||
Entity Information [Line Items] | |||
Entity Central Index Key | 0001488139 | ||
Document Fiscal Year Focus | 2023 | ||
Document Fiscal Period Focus | FY | ||
Amendment Flag | false | ||
Document Annual Report | true | ||
Document Transition Report | false | ||
Entity Incorporation, State or Country Code | DE | ||
Entity Tax Identification Number | 04-3512838 | ||
Entity Address, City or Town | Framingham | ||
Entity Address, State or Province | MA | ||
Entity Address, Address Line One | 111 Speen Street | ||
Entity Address, Address Line Two | Suite 410 | ||
Entity Address, Postal Zip Code | 01701 | ||
Title of 12(b) Security | Class A Common Stock, par value $0.0001 per share | ||
Trading Symbol | AMRC | ||
Security Exchange Name | NYSE | ||
Auditor Firm ID | 49 | ||
Auditor Location | Boston, Massachusetts | ||
Auditor Name | RSM US LLP | ||
Common Class A | |||
Entity Information [Line Items] | |||
Entity Common Stock, Shares Outstanding | 34,282,945 | ||
Common Class B | |||
Entity Information [Line Items] | |||
Entity Common Stock, Shares Outstanding | 18,000,000 |