Ameresco, Inc. Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details)

v3.23.1

Subsequent Events (Details)			3 Months Ended
Subsequent Events (Details)	Apr. 20, 2023 USD ($) project	Apr. 18, 2023 USD ($) lender	Mar. 31, 2023 USD ($) project
Solar Photovoltaic Projects \| August 2018 Long Term Finance Liability
Subsequent Event [Line Items]
Solar PV projects sold \| project			1
Sale leaseback transaction			$ 4,139,000
Subsequent Event \| Solar Photovoltaic Projects \| August 2018 Long Term Finance Liability
Subsequent Event [Line Items]
Solar PV projects sold \| project	1
Sale leaseback transaction	$ 72,056,000
Subsequent Event \| Line of Credit \| Revolving Credit Facility \| Corporate Joint Venture
Subsequent Event [Line Items]
Number of lenders \| lender		2
Principal amount		$ 140,844,000
Proceeds from lines of credit		$ 90,921,000

- Definition

Line Of Credit, Number Of Lenders

+ References

No definition available.

+ Details

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Namespace Prefix:	amrc_
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Balance Type:	na
Period Type:	instant

- Definition

Sale Leaseback Transaction, Number of Projects Sold

+ References

No definition available.

+ Details

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

- Definition

Sale Leaseback Transaction, Proceeds

+ References

No definition available.

+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

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Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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

- Details

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Namespace Prefix:
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Balance Type:
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- Details

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- Details

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- Details

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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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