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Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Sale-Leaseback (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2014
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Mar. 31, 2015
project
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| Sale Leaseback Transaction [Line Items] | ||
| Proceeds from sale of solar-PV projects | $ 0us-gaap_SaleLeasebackTransactionNetProceedsFinancingActivities | |
| Capital lease liabilities | 3,511us-gaap_CapitalLeaseObligations | |
| Solar Photovoltaic Projects | ||
| Sale Leaseback Transaction [Line Items] | ||
| Maximum combined funding amount |
50,000amrc_MaximumCombinedFundingAmountSaleLeasebackTransactions / us-gaap_SaleLeasebackTransactionDescriptionAxis = amrc_SolarPhotovoltaicProjectsMember |
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| Number of solar photovoltaic projects sold |
2amrc_SaleLeasebackTransactionNumberofProjectsSold / us-gaap_SaleLeasebackTransactionDescriptionAxis = amrc_SolarPhotovoltaicProjectsMember |
|
| Proceeds from sale of solar-PV projects |
7,581us-gaap_SaleLeasebackTransactionNetProceedsFinancingActivities / us-gaap_SaleLeasebackTransactionDescriptionAxis = amrc_SolarPhotovoltaicProjectsMember |
|
| Percentage of fair value threshold, integral equipment |
10.00%amrc_PercentageofFairValueThresholdIntegralEquipment / us-gaap_SaleLeasebackTransactionDescriptionAxis = amrc_SolarPhotovoltaicProjectsMember |
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| Sale leaseback transaction, deferred gain |
1,029us-gaap_SaleLeasebackTransactionDeferredGainNet / us-gaap_SaleLeasebackTransactionDescriptionAxis = amrc_SolarPhotovoltaicProjectsMember |
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| Capital lease assets |
3,511us-gaap_SaleLeasebackTransactionNetBookValue / us-gaap_SaleLeasebackTransactionDescriptionAxis = amrc_SolarPhotovoltaicProjectsMember |
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| Lease terms (in years) | P20Y | |
| Solar Photovoltaic Projects | Minimum | ||
| Sale Leaseback Transaction [Line Items] | ||
| Monthly payments |
43us-gaap_SaleLeasebackTransactionMonthlyRentalPayments / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_SaleLeasebackTransactionDescriptionAxis = amrc_SolarPhotovoltaicProjectsMember |
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| Solar Photovoltaic Projects | Maximum | ||
| Sale Leaseback Transaction [Line Items] | ||
| Monthly payments |
$ 414us-gaap_SaleLeasebackTransactionMonthlyRentalPayments / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_SaleLeasebackTransactionDescriptionAxis = amrc_SolarPhotovoltaicProjectsMember |
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| X | ||||||||||
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- Definition
Maximum Combined Funding Amount, Sale Leaseback Transactions No definition available.
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- Definition
Percentage of Fair Value Threshold, Integral Equipment No definition available.
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| X | ||||||||||
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- Definition
Sale Leaseback Transaction, Number of Projects Sold No definition available.
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| X | ||||||||||
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- Definition
Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The portion of the gain that will be recorded as income or a reduction in rent expense in future periods less amounts recognized in the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
A description of the terms of the lease(s) related to the assets being leased-back in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
The amount of the monthly rental payments due under the lease entered into in connection with the transactions involving the sale of property to another party and the lease of the property back to the seller. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The net book value of the asset(s) sold in connection with the sale of the property to another party and lease back to the seller. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of cash inflow after closing and deferred financing costs received by a seller-lessee in a sale-leaseback recognized in financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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