FAIR VALUE MEASURES (Details 5) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Financial assets:
Cash and due from banks	$ 139,500	$ 127,164
Federal funds sold and interest-bearing accounts	137,811	71,221
Loans, net	5,619,135	5,212,153
Accrued interest receivable	22,006	22,278
Financial liabilities:
Deposits	5,793,397	5,575,163
Securities sold under agreements to repurchase	18,400	53,505
Other borrowings	679,591	492,321
Subordinated deferrable interest debentures	84,889	84,228
FDIC loss-share payable	7,992	6,313	$ 1,897
Accrued interest payable	3,167	1,501
Fair Value [Member]
Financial assets:
Cash and due from banks	139,500	127,164
Federal funds sold and interest-bearing accounts	137,811	71,221
Loans, net	5,609,246	5,236,034
Accrued interest receivable	22,006	22,278
Financial liabilities:
Deposits	5,793,319	5,575,288
Securities sold under agreements to repurchase	18,400	53,505
Other borrowings	680,861	492,321
Subordinated deferrable interest debentures	69,471	67,321
FDIC loss-share payable	9,014	8,243
Accrued interest payable	3,167	1,501
Fair Value [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and due from banks	139,500	127,164
Federal funds sold and interest-bearing accounts	137,811	71,221
Loans, net	0	0
Accrued interest receivable	22,006	22,278
Financial liabilities:
Deposits	0	0
Securities sold under agreements to repurchase	18,400	53,505
Other borrowings	0	0
Subordinated deferrable interest debentures	0	0
FDIC loss-share payable	0	0
Accrued interest payable	3,167	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	5,793,319	5,575,288
Securities sold under agreements to repurchase	0	0
Other borrowings	680,861	492,321
Subordinated deferrable interest debentures	69,471	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	5,609,246	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	9,014	8,243
Accrued interest payable	$ 0	$ 0