FAIR VALUE (Schedule of Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financial Assets:
Securities available for sale	$ 300,232	$ 305,388
FHLB and FRB Stock	15,436	13,813
Loans held for sale, at fair value		1,200
Loans held for sale, at lower of cost or fair value	128	388
Accrued interest receivable	6,823	8,153
Financial Liabilities:
Federal home loan bank advances	58,795	61,795
Fair value [Member]
Financial Assets:
Cash and cash equivalents	118,964	162,691
Securities available for sale	300,232	305,388
FHLB and FRB Stock
Loans held for sale, at fair value		1,200
Loans held for sale, at lower of cost or fair value	141	428
Loans, net of allowance for loan losses	3,386,151	3,256,837
Accrued interest receivable	6,823	8,153
Financial Liabilities:
Deposits	3,429,255	3,410,448
Overnight borrowings	34,550
Federal home loan bank advances	59,141	62,286
Subordinated debt	48,798	48,768
Accrued interest payable	1,755	1,127
Fair value [Member] | Not Designated as Hedging Instrument [Member]
Financial Assets:
Derivatives	2,869	1,543
Financial Liabilities:
Derivatives	2,869	1,543
Fair value [Member] | Designated as Hedging Instrument [Member]
Financial Assets:
Derivatives	348	123
Financial Liabilities:
Derivatives	227	867
Carrying Value [Member]
Financial Assets:
Cash and cash equivalents	118,964	162,691
Securities available for sale	300,232	305,388
FHLB and FRB Stock	15,436	13,813
Loans held for sale, at fair value		1,200
Loans held for sale, at lower of cost or fair value	128	388
Loans, net of allowance for loan losses	3,406,040	3,279,936
Accrued interest receivable	6,823	8,153
Financial Liabilities:
Deposits	3,430,644	3,411,837
Overnight borrowings	34,550
Federal home loan bank advances	58,795	61,795
Subordinated debt	48,796	48,764
Accrued interest payable	1,755	1,127
Carrying Value [Member] | Not Designated as Hedging Instrument [Member]
Financial Assets:
Derivatives	2,869	1,543
Financial Liabilities:
Derivatives	2,869	1,543
Carrying Value [Member] | Designated as Hedging Instrument [Member]
Financial Assets:
Derivatives	348	123
Financial Liabilities:
Derivatives	227	867
Significant Unobservable Inputs (Level 3) [Member] | Fair value [Member]
Financial Assets:
Loans, net of allowance for loan losses	3,386,151	3,256,837
Accrued interest receivable	5,789	7,254
Financial Liabilities:
Subordinated debt	48,798	48,768
Accrued interest payable	750
Significant Other Observable Inputs (Level 2) [Member] | Fair value [Member]
Financial Assets:
Securities available for sale	295,408	300,563
Loans held for sale, at fair value		1,200
Loans held for sale, at lower of cost or fair value	141	428
Accrued interest receivable	1,034	899
Financial Liabilities:
Deposits	533,352	549,332
Overnight borrowings	34,550
Federal home loan bank advances	59,141	62,286
Accrued interest payable	827	966
Significant Other Observable Inputs (Level 2) [Member] | Fair value [Member] | Not Designated as Hedging Instrument [Member]
Financial Assets:
Derivatives	2,869	1,543
Financial Liabilities:
Derivatives	2,869	1,543
Significant Other Observable Inputs (Level 2) [Member] | Fair value [Member] | Designated as Hedging Instrument [Member]
Financial Assets:
Derivatives	348	123
Financial Liabilities:
Derivatives	227	867
Quoted Prices in Active Market For Identical Assets (Level 1) [Member] | Fair value [Member]
Financial Assets:
Cash and cash equivalents	118,964	162,691
Securities available for sale	4,824	4,825
Financial Liabilities:
Deposits	2,895,903	2,861,116
Accrued interest payable	$ 178	$ 161