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Nonrecourse Debt - Analysis of Other Nonrecourse Debt by Interest Rate (Detail) (USD $)
In Thousands, unless otherwise specified
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12 Months Ended |
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Dec. 31, 2014
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Dec. 31, 2013
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| Debt Instrument [Line Items] |
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| Other nonrecourse debt, Balance |
112,525hasi_OtherNonRecourseDebt
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159,843hasi_OtherNonRecourseDebt
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| Fixed-Rate Promissory Notes, Interest Rates from 2.06% to 5.00% Per Annum [Member] |
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| Debt Instrument [Line Items] |
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| Other nonrecourse debt, Balance |
31,800hasi_OtherNonRecourseDebt
/ us-gaap_DebtInstrumentAxis
= hasi_FixedRatePromissoryNotesInterestRatesFromTwoPointZeroSixPercentToFivePercentPerAnnumMember
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66,100hasi_OtherNonRecourseDebt
/ us-gaap_DebtInstrumentAxis
= hasi_FixedRatePromissoryNotesInterestRatesFromTwoPointZeroSixPercentToFivePercentPerAnnumMember
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| Fixed-Rate Promissory Notes, Interest Rates from 5.01% to 6.50% Per Annum [Member] |
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| Debt Instrument [Line Items] |
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| Other nonrecourse debt, Balance |
57,500hasi_OtherNonRecourseDebt
/ us-gaap_DebtInstrumentAxis
= hasi_FixedRatePromissoryNotesInterestRatesFromFivePointZeroOnePercentToSixPointFiveZeroPercentPerAnnumMember
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68,800hasi_OtherNonRecourseDebt
/ us-gaap_DebtInstrumentAxis
= hasi_FixedRatePromissoryNotesInterestRatesFromFivePointZeroOnePercentToSixPointFiveZeroPercentPerAnnumMember
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| Fixed-Rate Promissory Notes, Interest Rates from 6.51% to 8.00% Per Annum [Member] |
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| Debt Instrument [Line Items] |
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| Other nonrecourse debt, Balance |
23,200hasi_OtherNonRecourseDebt
/ us-gaap_DebtInstrumentAxis
= hasi_FixedRatePromissoryNotesInterestRatesFromSixPointFiveOnePercentToEightPercentPerAnnumMember
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24,900hasi_OtherNonRecourseDebt
/ us-gaap_DebtInstrumentAxis
= hasi_FixedRatePromissoryNotesInterestRatesFromSixPointFiveOnePercentToEightPercentPerAnnumMember
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| Minimum [Member] | Fixed-Rate Promissory Notes, Interest Rates from 2.06% to 5.00% Per Annum [Member] |
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| Debt Instrument [Line Items] |
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| Other nonrecourse debt, Maturity |
2015
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2014
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| Minimum [Member] | Fixed-Rate Promissory Notes, Interest Rates from 5.01% to 6.50% Per Annum [Member] |
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| Debt Instrument [Line Items] |
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| Other nonrecourse debt, Maturity |
2015
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2014
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| Minimum [Member] | Fixed-Rate Promissory Notes, Interest Rates from 6.51% to 8.00% Per Annum [Member] |
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| Debt Instrument [Line Items] |
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| Other nonrecourse debt, Maturity |
2015
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2015
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| Maximum [Member] | Fixed-Rate Promissory Notes, Interest Rates from 2.06% to 5.00% Per Annum [Member] |
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| Debt Instrument [Line Items] |
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| Other nonrecourse debt, Maturity |
2032
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2032
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| Maximum [Member] | Fixed-Rate Promissory Notes, Interest Rates from 5.01% to 6.50% Per Annum [Member] |
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| Debt Instrument [Line Items] |
|
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| Other nonrecourse debt, Maturity |
2031
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2031
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| Maximum [Member] | Fixed-Rate Promissory Notes, Interest Rates from 6.51% to 8.00% Per Annum [Member] |
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| Debt Instrument [Line Items] |
|
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| Other nonrecourse debt, Maturity |
2031
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2031
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