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Repurchase Agreement - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 CDO Bond [Member] Securities | Dec. 31, 2013 Repurchase Facility [Member] extension | Dec. 31, 2011 Repurchase Facility [Member]
Line of Credit Facility [Line Items] |  |  |  |  |
Line of credit, amount outstanding | $ 202,033 | $ 225,158 |  |  | $ 47,439
Investment, Face Amount |  |  | $ 68,726 |  |
Advance rate on face amount |  |  | 69.00% |  |
Number of senior and subordinate commercial real estate debt positions and commercial real estate securities included in CDO |  |  | 58 |  |
Interest rate for repurchase facility |  |  |  | 13.00% |
Current pay interest rate |  |  |  | 10.00% |
Accrual interest rate |  |  |  | 3.00% |
Expiration period |  |  |  | 18 months |
Number of extensions |  |  |  | 3 |
Option to extend, term |  |  |  | 6 months |
Internal rate of return |  |  | 17.00% |  |

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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Details
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