INVESTMENT SECURITIES - Investments in Securities Classified as Available for Sale or Held To Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Available for Sale:
Amortized Cost	$ 288,881	$ 334,846
Gross Unrealized Gains	1,097	1,480
Gross Unrealized Losses	(1,989)	(2,328)
Fair Value	287,989	333,998
Held to Maturity:
Amortized Cost	80,991	85,694
Gross Unrealized Gains	433	419
Gross Unrealized Losses	(336)	(364)
Fair Value	81,088	85,749
Carrying Amount
Held to Maturity:
Fair Value	80,991	85,694
U.S. Treasury Obligations
Available for Sale:
Amortized Cost	10,089	25,079
Gross Unrealized Gains	75	104
Fair Value	10,164	25,183
U.S. Agency Obligations
Held to Maturity:
Amortized Cost	16,864	17,849
Gross Unrealized Gains	121	119
Gross Unrealized Losses	(6)	(33)
Fair Value	16,979	17,935
U.S. GSEs
Available for Sale:
Amortized Cost	83,916	93,883
Gross Unrealized Gains	127	106
Gross Unrealized Losses	(531)	(636)
Fair Value	83,512	93,353
FHLB Obligations
Available for Sale:
Amortized Cost	67,302	67,362
Gross Unrealized Gains	101	100
Gross Unrealized Losses	(353)	(456)
Fair Value	67,050	67,006
Agency MBSs
Available for Sale:
Amortized Cost	63,919	74,573
Gross Unrealized Gains	762	1,101
Gross Unrealized Losses	(404)	(465)
Fair Value	64,277	75,209
Held to Maturity:
Amortized Cost	5,548	5,787
Gross Unrealized Gains	101	92
Fair Value	5,649	5,879
Agency CMBSs
Available for Sale:
Amortized Cost	23,784	23,972
Gross Unrealized Losses	(414)	(364)
Fair Value	23,370	23,608
Agency CMOs
Available for Sale:
Amortized Cost	39,871	49,694
Gross Unrealized Gains	32	46
Gross Unrealized Losses	(287)	(407)
Fair Value	39,616	49,333
Held to Maturity:
Amortized Cost	58,579	62,058
Gross Unrealized Gains	211	208
Gross Unrealized Losses	(330)	(331)
Fair Value	$ 58,460	61,935
ABSs
Available for Sale:
Amortized Cost		283
Gross Unrealized Gains		23
Fair Value		$ 306

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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Amount of debt securities categorized neither as held-to-maturity nor trading.

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Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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