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

Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Legal Proceedings (Details)

Commitments and Contingencies - Legal Proceedings (Details) (Pending Litigation [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	May 31, 2012
Pending Litigation [Member]
Loss Contingencies [Line Items]
Reprocurement costs sought by customer	$ 6.8
Related claims outstanding with customer		$ 3.9

- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

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+ Details