FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 4) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Financial assets:
Cash and due from banks	$ 118,518	$ 78,036
Federal funds sold and interest-bearing accounts	5,500	5,500
FDIC loss-share receivable	6,301	31,351	$ 65,441
Financial liabilities:
Other borrowings	39,000	78,881
Subordinated deferrable interest debentures	69,874	65,325
Carrying Value [Member]
Financial assets:
Cash and due from banks	118,518	78,036
Federal funds sold and interest-bearing accounts	272,045	92,323
Loans, net	3,971,974	2,783,763
FDIC loss-share receivable	6,301	31,351
Accrued interest receivable	21,274	17,023
Financial liabilities:
Deposits	4,879,290	3,431,149
Securities sold under agreements to repurchase	63,585	73,310
Other borrowings	39,000	78,881
Accrued interest payable	1,054	1,382
Subordinated deferrable interest debentures	69,874	65,325
Fair Value [Member]
Financial assets:
Cash and due from banks	118,518	78,036
Federal funds sold and interest-bearing accounts	272,045	92,323
Loans, net	3,982,606	2,785,627
FDIC loss-share receivable	(944)	18,764
Accrued interest receivable	21,274	17,023
Financial liabilities:
Deposits	4,880,294	3,432,059
Securities sold under agreements to repurchase	36,585	73,310
Other borrowings	39,000	78,881
Accrued interest payable	1,054	1,382
Subordinated deferrable interest debentures	52,785	46,564
Fair Value [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and due from banks	118,518	78,036
Federal funds sold and interest-bearing accounts	272,045	92,323
Loans, net	0	0
FDIC loss-share receivable	0	0
Accrued interest receivable	21,274	17,023
Financial liabilities:
Deposits	0	0
Securities sold under agreements to repurchase	63,585	73,310
Other borrowings	0	0
Accrued interest payable	1,054	1,382
Subordinated deferrable interest debentures	0	0
Fair Value [Member] | Fair Value, Inputs, Level 2 [Member]
Financial assets:
Cash and due from banks	0	0
Federal funds sold and interest-bearing accounts	0	0
Loans, net	0	0
FDIC loss-share receivable	0	0
Accrued interest receivable	0	0
Financial liabilities:
Deposits	4,880,294	3,432,059
Securities sold under agreements to repurchase	0	0
Other borrowings	39,000	78,881
Accrued interest payable	0	0
Subordinated deferrable interest debentures	52,785	46,564
Fair Value [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets:
Cash and due from banks	0	0
Loans, net	3,982,606	2,785,627
FDIC loss-share receivable	(944)	18,764
Accrued interest receivable	0	0
Financial liabilities:
Deposits	0	0
Securities sold under agreements to repurchase	0	0
Other borrowings	0	0
Accrued interest payable	0	0
Subordinated deferrable interest debentures	$ 0	$ 0