AVAILABLE-FOR-SALE SECURITIES (Details 7) - USD ($)		3 Months Ended	12 Months Ended
		Mar. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Designated credit reserve, Beginning Balance		$ (8,891,565)
Designated credit reserve, Beginning Balance	[1]	(8,891,565)
Designated credit reserve, Acquisitions		0
Designated credit reserve, Dispositions		2,904,601
Designated credit reserve, Accretion of net discount		0
Designated credit reserve, Realized gain on paydowns		0
Designated credit reserve, Realized credit losses		1,378,796
Designated credit reserve, Addition to credit reserves		(20,994)
Designated credit reserve, Release of credit reserves		0
Designated credit reserve, Ending balance	[1]	(4,629,162)	$ (8,891,565)
Unamortized net discount, Beginning balance		(57,280,275)
Unamortized net discount, Beginning balance		(57,280,275)
Unamortized net discount, Acquisitions		0
Unamortized net discount, Dispositions		10,573,134
Unamortized net discount, Accretion of net discount		1,865,398
Unamortized net discount, Realized gain on paydowns		79,149
Unamortized net discount, Realized credit losses		0
Unamortized net discount, Addition to credit reserves		20,994
Unamortized net discount, Realized credit losses		0
Unamortized net discount, Ending balance		(44,741,600)	(57,280,275)
Beginning Balance, Total		(66,171,840)
Acquisitions, Total		0
Dispositions, Total		13,477,735
Accretion of net discount, Total		1,865,398
Realized gain on paydowns, Total		79,149
Realized credit losses, Total		1,378,796
Addition to credit reserves Total		0
Release of credit reserves, Total		0
Ending balance, Total		(49,370,762)
Previous Accounting Guidance [Member]
Schedule of Available-for-sale Securities [Line Items]
Designated credit reserve, Beginning Balance			(12,697,796)
Designated credit reserve, Cumulative-effect adjustment for Linked Transactions			(36,627,321)
Designated credit reserve, Beginning Balance		(8,891,565)	(49,325,117)
Designated credit reserve, Acquisitions			0
Designated credit reserve, Dispositions			0
Designated credit reserve, Accretion of net discount			30,201,676
Designated credit reserve, Realized gain on paydowns			0
Designated credit reserve, Realized credit losses			10,582,246
Designated credit reserve, Addition to credit reserves			(2,669,938)
Designated credit reserve, Release of credit reserves			2,319,568
Designated credit reserve, Ending balance			(8,891,565)
Unamortized net discount, Beginning balance			(17,454,022)
Unamortized net discount, Cumulative-effect adjustment for Linked Transactions			(47,091,958)
Unamortized net discount, Beginning balance		(57,280,275)	(64,545,980)
Unamortized net discount, Acquisitions			(24,446,013)
Unamortized net discount, Dispositions			20,963,895
Unamortized net discount, Accretion of net discount			13,061,839
Unamortized net discount, Realized gain on paydowns			226,553
Unamortized net discount, Realized credit losses			(2,890,939)
Unamortized net discount, Addition to credit reserves			2,669,938
Unamortized net discount, Realized credit losses			(2,319,568)
Unamortized net discount, Ending balance			(57,280,275)
Beginning Balance, Total			(113,871,097)
Cumulative-effect adjustment for Linked Transactions, Total			(83,719,279)
Beginning Balance, Total		(66,171,840)	(30,151,818)
Acquisitions, Total			(24,446,013)
Accretion of net discount, Total		$ 43,263,515	20,963,895
Realized gain on paydowns, Total			226,553
Realized credit losses, Total			7,691,307
Addition to credit reserves Total			0
Release of credit reserves, Total			0
Ending balance, Total			$ (66,171,840)

[1] Discount designated as Credit Reserve and amount related to OTTI are generally not expected to be accreted into interest income. Amounts disclosed reflect Credit Reserve of $3,862,676 and $8,146,073, at March 31, 2016 and December 31, 2015, respectively, and OTTI of $766,487 and $745,493 at March 31, 2016 and December 31, 2015, respectively