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DERIVATIVE INSTRUMENTS HEDGING AND NON-HEDGING ACTIVITIES (Details) (USD $)
Jun. 30, 2013
Dec. 31, 2012
Derivative Financial Instruments, Fair value $ 23,046,741 $ 8,624,815
Derivative Asset, Notional Amount 510,000,000 5,000,000
Derivative Liabilities, Fair value 0 (283,754)
Derivative Liability, Notional Amount 0 35,000,000
Interest Rate Swap [Member]
   
Derivative Financial Instruments, Fair value 5,770,974 0
Derivative Asset, Notional Amount 485,000,000 0
Derivative Liabilities, Fair value 0 (283,754)
Derivative Liability, Notional Amount 0 35,000,000
Swaption [Member]
   
Derivative Financial Instruments, Fair value 1,618,567 12,062
Derivative Asset, Notional Amount 25,000,000 5,000,000
Derivative Liabilities, Fair value 0 0
Derivative Liability, Notional Amount 0 0
Linked Tansactions [Member]
   
Derivative Financial Instruments, Fair value 15,657,200 8,612,753
Derivative Asset, Notional Amount 0 0
Derivative Liabilities, Fair value 0 0
Derivative Liability, Notional Amount $ 0 $ 0