FAIR VALUE (Details 2) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financial assets:
Cash and due from banks	$ 50,588	$ 76,614
Interest earning deposits with banks	48,424	18,133
Securities available for sale	726,056	759,916
Securities held to maturity	172,877	179,885
Accrued interest receivable	11,907	11,652
Carrying Amount
Financial assets:
Cash and due from banks	50,588	76,614
Interest earning deposits with banks	48,424	18,133
Securities available for sale	726,056	759,916
Securities restricted	36,195	35,349
Securities held to maturity	176,089	180,866
Loans, net	3,169,085	3,071,045
Derivatives	7,374	4,546
Accrued interest receivable	11,907	11,652
Financial liabilities:
Certificates of deposit	282,747	222,364
Demand and other deposits	3,148,498	3,112,179
Federal funds purchased		50,000
Federal Home Loan Bank advances	520,092	501,374
Repurchase agreements	872	877
Subordinated debentures	78,676	78,641
Derivatives	1,759	1,823
Accrued interest payable	436	1,574
Fair Value
Financial assets:
Cash and due from banks	50,588	76,614
Interest earning deposits with banks	48,424	18,133
Securities available for sale	726,056	759,916
Securities restricted
Securities held to maturity	172,877	179,885
Loans, net	3,161,561	3,010,023
Derivatives	7,374	4,546
Accrued interest receivable	11,907	11,652
Financial liabilities:
Certificates of deposit	280,060	220,775
Demand and other deposits	3,148,498	3,112,179
Federal funds purchased		50,000
Federal Home Loan Bank advances	514,439	498,558
Repurchase agreements	872	877
Subordinated debentures	75,661	77,933
Derivatives	1,759	1,823
Accrued interest payable	436	1,574
Quoted Prices In Active Markets for Identical Assets (Level 1) | Fair Value
Financial assets:
Cash and due from banks	50,588	76,614
Interest earning deposits with banks	48,424	18,133
Securities available for sale	0	0
Securities restricted
Securities held to maturity	0	0
Loans, net	0	0
Derivatives	0	0
Accrued interest receivable	0	0
Financial liabilities:
Certificates of deposit	0	0
Demand and other deposits	3,148,498	3,112,179
Federal funds purchased		50,000
Federal Home Loan Bank advances	227,000	185,000
Repurchase agreements	0	0
Subordinated debentures	0	0
Derivatives	0	0
Accrued interest payable	0	0
Significant Other Observable Inputs (Level 2) | Fair Value
Financial assets:
Cash and due from banks	0	0
Interest earning deposits with banks	0	0
Securities available for sale	726,056	759,916
Securities restricted
Securities held to maturity	172,877	179,885
Loans, net	0	0
Derivatives	7,374	4,546
Accrued interest receivable	3,424	3,211
Financial liabilities:
Certificates of deposit	280,060	220,775
Demand and other deposits	0	0
Federal funds purchased		0
Federal Home Loan Bank advances	287,439	313,558
Repurchase agreements	872	877
Subordinated debentures	75,661	77,933
Derivatives	1,759	1,823
Accrued interest payable	436	1,574
Significant Unobservable Inputs (Level 3) | Fair Value
Financial assets:
Cash and due from banks	0	0
Interest earning deposits with banks	0	0
Securities available for sale	0	0
Securities restricted
Securities held to maturity	0	0
Loans, net	3,161,561	3,010,023
Derivatives	0	0
Accrued interest receivable	8,483	8,441
Financial liabilities:
Certificates of deposit	0	0
Demand and other deposits	0	0
Federal funds purchased		0
Federal Home Loan Bank advances	0	0
Repurchase agreements	0	0
Subordinated debentures	0	0
Derivatives	0	0
Accrued interest payable	$ 0	$ 0