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Commercial Mortgage Loan - Carrying Value of the Commercial Mortgage Loan (Detail) (USD $)
Mar. 31, 2014
Dec. 31, 2013
Loans And Leases Receivable [Line Items]    
Total $ 5,000,000 $ 18,845,053
Commercial Mortgage Loan [Member]
   
Loans And Leases Receivable [Line Items]    
Current Face Amount 5,000,000 19,465,000
Unamortized Fees   29,711
Unaccreted Purchase Discount   (649,658)
Total $ 5,000,000 $ 18,845,053