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Commercial Mortgage Loan - Additional Information (Detail) (USD $)
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12 Months Ended | 0 Months Ended | ||
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Dec. 31, 2013
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Dec. 31, 2013
Commercial Mortgage Loan [Member]
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Aug. 07, 2013
Commercial Mortgage Loan [Member]
Atlanta [Member]
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Dec. 31, 2013
Commercial Mortgage Loan [Member]
Atlanta [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
| Acquired loan | $ 19,560,000 | $ 19,600,000 | $ 19,560,000 | |
| Payment to acquired loan | 17,658,204 | 17,500,000 | ||
| Discount on acquired loan | 2,050,000 | |||
| Maturity Date | 2014-03 | 2014-03 | ||
| Accrued interest on the commercial mortgage loan | $ 43,000 | |||
| Date on which loans were paid | 2014-01-06 |