FAIR VALUE MEASURES (Details 5) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financial assets:
Cash and due from banks	$ 127,164	$ 127,164
Federal funds sold and interest-bearing accounts	232,045	71,221
Loans, net	5,268,621	5,212,153
Accrued interest receivable	20,412	22,278
Financial liabilities:
Deposits	5,642,369	5,575,163
Securities sold under agreements to repurchase	40,415	53,505
Other borrowings	525,669	492,321
Subordinated deferrable interest debentures	84,559	84,228
FDIC loss-share payable	(6,489)	(6,313)
Accrued interest payable	1,614	1,501
Fair Value [Member]
Financial assets:
Cash and due from banks	127,164	127,164
Federal funds sold and interest-bearing accounts	232,045	71,221
Loans, net	5,289,414	5,236,034
Accrued interest receivable	20,412	22,278
Financial liabilities:
Deposits	5,642,757	5,575,288
Securities sold under agreements to repurchase	40,415	53,505
Other borrowings	526,914	492,321
Subordinated deferrable interest debentures	68,507	67,321
FDIC loss-share payable	8,002	8,243
Accrued interest payable	1,614	1,501
Fair Value [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and due from banks	127,164	127,164
Federal funds sold and interest-bearing accounts	232,045	71,221
Loans, net	0	0
Accrued interest receivable	20,412	22,278
Financial liabilities:
Deposits	0	0
Securities sold under agreements to repurchase	40,415	53,505
Other borrowings	0	0
Subordinated deferrable interest debentures	0	0
FDIC loss-share payable	0	0
Accrued interest payable	1,614	1,501
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
Accrued interest receivable	0	0
Financial liabilities:
Deposits	5,642,757	5,575,288
Securities sold under agreements to repurchase	0	0
Other borrowings	526,914	492,321
Subordinated deferrable interest debentures	68,507	67,321
FDIC loss-share payable	0	0
Accrued interest payable	0	0
Fair Value [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets:
Cash and due from banks	0	0
Federal funds sold and interest-bearing accounts	0	0
Loans, net	5,289,414	5,236,034
Accrued interest receivable	0	0
Financial liabilities:
Deposits	0	0
Securities sold under agreements to repurchase	0	0
Other borrowings	0	0
Subordinated deferrable interest debentures	0	0
FDIC loss-share payable	8,002	8,243
Accrued interest payable	$ 0	$ 0