INVESTMENT SECURITIES, AMORTIZED COST AND FAIR VALUE (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Investment Securities Available-for-Sale:
Amortized Cost	$ 281,838	$ 324,662
Unrealized Gains	708	1,129
Unrealized Losses	4,074	5,132
Fair Value	278,472	320,659
Investment Securities Held-to-Maturity:
Amortized Cost	32,571	41,003
Unrealized Gains	101	56
Unrealized Losses	322	569
Fair Value	32,350	40,490
U.S. Treasury notes
Investment Securities Available-for-Sale:
Amortized Cost	2,283	28,180
Unrealized Gains	0	41
Unrealized Losses	24	76
Fair Value	2,259	28,145
U.S. Agency notes
Investment Securities Available-for-Sale:
Amortized Cost	84,837	87,098
Unrealized Gains	57	150
Unrealized Losses	1,633	1,848
Fair Value	83,261	85,400
U.S. Agency mortgage-backed securities
Investment Securities Available-for-Sale:
Amortized Cost	68,347	72,402
Unrealized Gains	33	89
Unrealized Losses	1,227	1,444
Fair Value	67,153	71,047
Investment Securities Held-to-Maturity:
Amortized Cost	0
Fair Value	0
Non-taxable municipal securities
Investment Securities Available-for-Sale:
Amortized Cost	102,849	114,064
Unrealized Gains	343	574
Unrealized Losses	1,018	1,623
Fair Value	102,174	113,015
Investment Securities Held-to-Maturity:
Amortized Cost	28,871	31,015
Unrealized Gains	101	56
Unrealized Losses	227	352
Fair Value	28,745	30,719
Taxable municipal securities
Investment Securities Available-for-Sale:
Amortized Cost	20,313	19,710
Unrealized Gains	175	220
Unrealized Losses	122	85
Fair Value	20,366	19,845
Investment Securities Held-to-Maturity:
Amortized Cost	3,700	9,988
Unrealized Gains	0	0
Unrealized Losses	95	217
Fair Value	3,605	9,771
Mutual funds
Investment Securities Available-for-Sale:
Amortized Cost	2,586	2,527
Unrealized Gains	2	0
Unrealized Losses	46	45
Fair Value	2,542	2,482
Investment Securities Held-to-Maturity:
Amortized Cost	0
Fair Value	0
Trust preferred securities
Investment Securities Available-for-Sale:
Amortized Cost	49	49
Unrealized Gains	1	0
Unrealized Losses	0	1
Fair Value	50	48
Investment Securities Held-to-Maturity:
Amortized Cost	0
Fair Value	0
Equity securities
Investment Securities Available-for-Sale:
Amortized Cost	574	632
Unrealized Gains	97	55
Unrealized Losses	4	10
Fair Value	667	$ 677
Investment Securities Held-to-Maturity:
Amortized Cost	0
Fair Value	$ 0

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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