AVAILABLE-FOR-SALE SECURITIES (Details 1) - USD ($)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Face Value	$ 386,463,099	$ 482,062,451
Unamortized premium	4,796,106	12,544,193
Unamortized discount
Designated credit reserve	(12,697,796)	(16,126,355)	$ (4,882,582)
Net, unamortized	(17,454,022)	(22,400,380)	$ (3,534,339)
Amortized Cost	361,107,387	456,079,909
Gross unrealized gain	8,402,890	4,331,610
Gross unrealized (loss)	(1,194,539)	(15,426,564)
Fair Value	368,315,738	444,984,955
Agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Face Value	309,790,551	386,672,123
Unamortized premium	4,796,106	12,544,193
Unamortized discount
Designated credit reserve	0	0
Net, unamortized	(2,244,687)	(1,489,132)
Amortized Cost	312,341,970	397,727,184
Gross unrealized gain	3,670,643	0
Gross unrealized (loss)	(1,181,928)	(15,426,564)
Fair Value	314,830,685	382,300,620
Non Agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Face Value	76,672,548	95,390,328
Unamortized premium	0	0
Unamortized discount
Designated credit reserve	(12,697,796)	(16,126,355)
Net, unamortized	(15,209,335)	(20,911,248)
Amortized Cost	48,765,417	58,352,725
Gross unrealized gain	4,732,247	4,331,610
Gross unrealized (loss)	(12,611)	0
Fair Value	$ 53,485,053	$ 62,684,335