INVESTMENT SECURITIES - Investments in Securities Classified as Available for Sale or Held To Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Available for Sale:
Amortized Cost	$ 334,846	$ 283,185
Gross Unrealized Gains	1,480	1,963
Gross Unrealized Losses	(2,328)	(1,694)
Fair Value	333,998	283,454
Held to Maturity:
Amortized Cost	85,694	119,674
Gross Unrealized Gains	419	1,135
Gross Unrealized Losses	(364)	(716)
Fair Value	85,749	120,093
Carrying Amount
Held to Maturity:
Amortized Cost	85,694	119,674
U.S. Treasury Obligations
Available for Sale:
Amortized Cost	25,079	25,064
Gross Unrealized Gains	104	61
Gross Unrealized Losses		(12)
Fair Value	25,183	25,113
U.S. Agency Obligations
Held to Maturity:
Amortized Cost	17,849	20,084
Gross Unrealized Gains	119	486
Gross Unrealized Losses	(33)
Fair Value	17,935	20,570
U.S. GSEs
Available for Sale:
Amortized Cost	93,883	20,895
Gross Unrealized Gains	106	3
Gross Unrealized Losses	(636)	(104)
Fair Value	93,353	20,794
Held to Maturity:
Amortized Cost		9,556
Gross Unrealized Gains		166
Fair Value		9,722
FHLB Obligations
Available for Sale:
Amortized Cost	67,362	51,230
Gross Unrealized Gains	100	107
Gross Unrealized Losses	(456)	(226)
Fair Value	67,006	51,111
Held to Maturity:
Amortized Cost		4,758
Gross Unrealized Gains		76
Fair Value		4,834
Agency MBSs
Available for Sale:
Amortized Cost	74,573	96,073
Gross Unrealized Gains	1,101	1,688
Gross Unrealized Losses	(465)	(512)
Fair Value	75,209	97,249
Held to Maturity:
Amortized Cost	5,787	7,027
Gross Unrealized Gains	92	154
Fair Value	5,879	7,181
Agency CMBSs
Available for Sale:
Amortized Cost	23,972	24,950
Gross Unrealized Losses	(364)	(397)
Fair Value	23,608	24,553
Agency CMOs
Available for Sale:
Amortized Cost	49,694	64,648
Gross Unrealized Gains	46	74
Gross Unrealized Losses	(407)	(443)
Fair Value	49,333	64,279
Held to Maturity:
Amortized Cost	62,058	78,249
Gross Unrealized Gains	208	253
Gross Unrealized Losses	(331)	(716)
Fair Value	61,935	77,786
ABSs
Available for Sale:
Amortized Cost	283	325
Gross Unrealized Gains	23	30
Fair Value	$ 306	$ 355

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 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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