| Aging Schedule of Past Due Residential Loans HFI (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | 
|---|---|
| Securitized Manufacturing Housing Loan Portfolio I | |
| 30-59 Days Past Due | $ 690 | 
| 60-89 Days past Due | 275 | 
| Over 90 Days Past Due | 791 | 
| Repossessed | 492 | 
| Total Past Due | 2,248 | 
| Total Current Due | 116,498 | 
| Total Outstanding Face Amount | 118,746 | 
| Securitized Manufacturing Housing Loan Portfolio II | |
| 30-59 Days Past Due | 1,158 | 
| 60-89 Days past Due | 501 | 
| Over 90 Days Past Due | 1,512 | 
| Repossessed | 762 | 
| Total Past Due | 3,933 | 
| Total Current Due | 149,260 | 
| Total Outstanding Face Amount | 153,193 | 
| Residential Mortgage Loans | |
| 30-59 Days Past Due | |
| 60-89 Days past Due | 488 | 
| Over 90 Days Past Due | 9,250 | 
| Repossessed | 114 | 
| Total Past Due | 9,852 | 
| Total Current Due | 46,279 | 
| Total Outstanding Face Amount | $ 56,131 | 
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- Definition Aging bucket for past due residential loans that are 30-59 days past due. No definition available. 
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- Definition Aging bucket for past due residential loans that are 60-89 days past due. No definition available. 
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- Definition Aging bucket for past due residential loans that are over 90 days past due. No definition available. 
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- Definition Amount of past due residential loans repossessed by the company due to delinquency. No definition available. 
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- Definition Total amount for residential loans that have been paid on a timely basis. No definition available. 
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- Definition Total stated principal amount of residential loans held -for-investment. No definition available. 
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- Definition Total amount of past due residential loans. No definition available. 
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