SECURITIES - Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Available-for-sale:
Available-for-sale, Amortized Cost	$ 679,352	$ 715,507
Gross Unrealized Gains	511	431
Gross Unrealized Losses	(15,818)	(10,399)
Available-for-sale securities, at fair value	664,045	705,539
Held-to-maturity:
Held-to-maturity, Amortized Cost	65,101	13,275
Gross Unrealized Gains	299	61
Gross Unrealized Losses	(363)	(190)
Held-to-maturity, fair value	65,037	13,146
SBA guaranteed securities
Available-for-sale:
Available-for-sale, Amortized Cost	101,415	104,111
Gross Unrealized Gains	95	129
Gross Unrealized Losses	(1,567)	(948)
Available-for-sale securities, at fair value	99,943	103,292
Mortgage-backed securities issued by U.S. government agencies or sponsored enterprises: residential
Available-for-sale:
Available-for-sale, Amortized Cost	259,767	250,580
Gross Unrealized Gains	360	297
Gross Unrealized Losses	(5,539)	(1,701)
Available-for-sale securities, at fair value	254,588	249,176
Held-to-maturity:
Held-to-maturity, Amortized Cost	10,679	10,841
Gross Unrealized Gains	44	61
Gross Unrealized Losses	(335)	(170)
Held-to-maturity, fair value	10,388	10,732
Mortgage-backed securities issued by U.S. government agencies or sponsored enterprises: commercial
Available-for-sale:
Available-for-sale, Amortized Cost	65,920	65,986
Gross Unrealized Losses	(1,371)	(500)
Available-for-sale securities, at fair value	64,549	65,486
Held-to-maturity:
Held-to-maturity, Amortized Cost	2,488
Held-to-maturity, fair value	2,488
Collateralized mortgage obligations issued by U.S. government agencies or sponsored enterprises: residential
Available-for-sale:
Available-for-sale, Amortized Cost	203,156	234,881
Gross Unrealized Gains	20
Gross Unrealized Losses	(6,292)	(6,434)
Available-for-sale securities, at fair value	196,884	228,447
Held-to-maturity:
Held-to-maturity, Amortized Cost	45,735	2,434
Gross Unrealized Gains	209
Gross Unrealized Losses	(28)	(20)
Held-to-maturity, fair value	45,916	2,414
Collateralized mortgage obligations issued by U.S. government agencies or sponsored enterprises: commercial
Available-for-sale:
Available-for-sale, Amortized Cost	36,068	36,151
Gross Unrealized Losses	(1,049)	(472)
Available-for-sale securities, at fair value	35,019	35,679
Corporate debt securities
Available-for-sale:
Available-for-sale, Amortized Cost	12,790	5,789
Gross Unrealized Gains	35	5
Available-for-sale securities, at fair value	12,825	5,794
Obligations of municipal subdivisions
Available-for-sale:
Available-for-sale, Amortized Cost	236	6,672
Gross Unrealized Gains	1
Gross Unrealized Losses		(45)
Available-for-sale securities, at fair value	237	6,627
Held-to-maturity:
Held-to-maturity, Amortized Cost	6,199
Gross Unrealized Gains	46
Held-to-maturity, fair value	$ 6,245
CRA qualified investment fund
Available-for-sale:
Available-for-sale, Amortized Cost		11,337
Gross Unrealized Losses		(299)
Available-for-sale securities, at fair value		$ 11,038

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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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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