INVESTMENT SECURITIES - Portfolio of Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 37,759	$ 81,052
Gross Unrealized Gains	1	436
Gross Unrealized Losses	786	568
Fair Value	36,974	80,920
State, county, and municipal securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,977	35,908
Gross Unrealized Gains	1	265
Gross Unrealized Losses	10	22
Fair Value	1,968	36,151
Mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	35,782	45,144
Gross Unrealized Gains	0	171
Gross Unrealized Losses	776	546
Fair Value	$ 35,006	$ 44,769

Amount of investment in debt security measured at amortized cost (held-to-maturity).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 45
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Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).

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-Name Accounting Standards Codification
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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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