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Credit Facilities - Summary of Required Covenant Included in Loan Agreements (Detail) (Covenants Threshold [Member], USD $)
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Dec. 31, 2014
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Covenants Threshold [Member]
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| Line of Credit Facility [Line Items] | |
| Minimum Liquidity (defined as available borrowings under the Loan Agreements plus unrestricted cash divided by actual borrowings) of greater than: |
5.00%hasi_DebtCovenantMinimumLiquidityPercentage / us-gaap_CreditFacilityAxis = hasi_CovenantsMember |
| 12 month rolling Net Interest Margin of greater than: |
$ 0hasi_NetInterestMarginAmount / us-gaap_CreditFacilityAxis = hasi_CovenantsMember |
| Maximum Debt to Equity Ratio of less than: |
4hasi_MaximumDebtToEquityRatio1 / us-gaap_CreditFacilityAxis = hasi_CovenantsMember |
| X | ||||||||||
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- Definition
Debt Covenant Minimum Liquidity Percentage No definition available.
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| X | ||||||||||
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- Definition
Maximum Debt To Equity Ratio1 No definition available.
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| X | ||||||||||
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- Definition
Net Interest Margin Amount No definition available.
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| X | ||||||||||
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- Details
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