ESTIMATED FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financial assets:
Cash and due from banks	$ 102,280	$ 79,750
Interest bearing deposits with banks	11,558	24,808
Securities available for sale	819,722	800,203
Securities held to maturity	222,878	210,003
Accrued interest receivable	10,233	9,270
Financial liabilities:
Certificates of deposit	206,732
Junior subordinated debentures	15,244	15,878
Carrying Amount
Financial assets:
Cash and due from banks	102,280	79,750
Interest bearing deposits with banks	11,558	24,408
Securities available for sale	819,722	800,203
Securities restricted	34,743	24,788
Securities held to maturity	223,237	208,351
Loans, net	2,574,536	2,390,030
Derivatives	2,510	779
Accrued interest receivable	10,233	9,270
Financial liabilities:
Certificates of deposit	206,732	292,855
Demand and other deposits	2,719,277	2,550,770
Federal funds purchased	100,000	120,000
Federal Home Loan Bank advances	496,684	297,507
Repurchase agreements	674	50,891
Subordinated debentures	78,502	78,363
Junior subordinated debentures	15,244	15,878
Derivatives	1,670	2,073
Accrued interest payable	1,849	1,644
Fair Value
Financial assets:
Cash and due from banks	102,280	79,750
Interest bearing deposits with banks	11,558	24,408
Securities available for sale	819,722	800,203
Securities held to maturity	222,878	210,003
Loans, net	2,542,395	2,379,171
Derivatives	2,510	779
Accrued interest receivable	10,233	9,270
Financial liabilities:
Certificates of deposit	206,026	293,368
Demand and other deposits	2,719,277	2,550,770
Federal funds purchased	100,000	120,000
Federal Home Loan Bank advances	496,249	298,015
Repurchase agreements	674	51,480
Subordinated debentures	78,303	78,830
Junior subordinated debentures	15,258	16,566
Derivatives	1,670	2,073
Accrued interest payable	1,849	1,644
Level 1 | Fair Value
Financial assets:
Cash and due from banks	102,280	79,750
Interest bearing deposits with banks	11,558	24,408
Financial liabilities:
Demand and other deposits	2,719,277	2,550,770
Federal funds purchased	100,000	120,000
Federal Home Loan Bank advances	175,000
Accrued interest payable	87	93
Level 2 | Fair Value
Financial assets:
Securities available for sale	819,722	800,203
Securities held to maturity	222,878	210,003
Derivatives	2,510	779
Accrued interest receivable	3,480	3,228
Financial liabilities:
Certificates of deposit	206,026	293,368
Federal Home Loan Bank advances	321,249	298,015
Repurchase agreements	674	51,480
Derivatives	1,670	2,073
Accrued interest payable	316	329
Level 3 | Fair Value
Financial assets:
Loans, net	2,542,395	2,379,171
Accrued interest receivable	6,753	6,042
Financial liabilities:
Subordinated debentures	78,303	78,830
Junior subordinated debentures	15,258	16,566
Accrued interest payable	$ 1,446	$ 1,222