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

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details
Uncategorized
- Uncategorized Items - amrc-20190331.xml

Revenue from Contracts with Customers - Additional Information (Details)

v3.19.1

Revenue from Contracts with Customers - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract with customer, liability, noncurrent	$ 6,129,000
Contract with customer, asset, reclassified to receivable	90,344,000	$ 120,072,000
Contract with customer, asset, revenue recognized	90,895,000	87,440,000
Contract with customer, liability, revenue recognized	24,095,000	17,843,000
Contract with customer, liability, billings	18,929,000	16,678,000
Revenue, remaining performance obligation	$ 1,674,600,000
Revenue, remaining performance obligation, percentage	27.00%
Capitalized contract cost, project development costs	$ 2,777,000	2,440,000
Capitalized contract cost, impairment loss	$ 0	$ 0
Minimum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract receivable retainage percentage	5.00%
Maximum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract receivable retainage percentage	10.00%

- Definition

Capitalized Contract Cost, Project Development Costs

+ References

No definition available.

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- Definition

Contract Receivable Retainage Percentage

+ References

No definition available.

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Contract With Customer, Asset, Revenue Recognized

+ References

No definition available.

+ Details

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Namespace Prefix:	amrc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Contract With Customer, Liability, Billings

+ References

No definition available.

+ Details

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Namespace Prefix:	amrc_
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- Definition

Amount of impairment loss for asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

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- Definition

Amount of decrease in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time from transfer to receivable due to right to consideration becoming unconditional.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
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-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130551-203045

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.

+ References

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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- Definition

Percentage of remaining performance obligation to total remaining performance obligation not recognized as revenue.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
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