OTHER COMPREHENSIVE INCOME (LOSS) - Reconciliation of changes in components of other comprehensive loss (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other comprehensive income (loss)
Net unrealized gains (losses) on securities available-for-sale	$ 2,258	$ (202)	$ (318)
Unrealized gains (losses) on securities available-for-sale	1,995	(520)	(496)
Other comprehensive income (loss)	1,577	(415)	(298)
Statements of Comprehensive Income (Loss)
Other comprehensive income (loss)
Net unrealized gains (losses) on securities available-for-sale	2,258	(202)	(318)
Reclassification of net realized gains in net income	(263)	(318)	(178)
Unrealized gains (losses) on securities available-for-sale	1,995	(520)	(496)
Income tax (expense) benefit	(418)	105	198
Unrealized gains (losses) on securities available-for-sale, net of tax	1,577	(415)	(298)
Other comprehensive income (loss)	$ 1,577	$ (415)	$ (298)

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Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount before tax, after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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