DEBT SECURITIES - Gross unrealized gains and losses (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Securities available for sale
Amortized Cost	$ 272,396	$ 237,574
Gross Unrealized Gains	4,407	2,195
Gross Unrealized Losses	305	296
Fair Value	276,498	239,473
Securities held to maturity
Amortized Cost		26,372
Gross Unrealized Gains		561
Gross Unrealized Losses		6
Fair Value		26,927
U.S. government and government-sponsored enterprise obligations
Securities available for sale
Amortized Cost	5,002	14,994
Gross Unrealized Gains	93	210
Fair Value	5,095	15,204
U.S. government agency and government-sponsored residential mortgage-backed securities
Securities available for sale
Amortized Cost	234,819	163,982
Gross Unrealized Gains	3,113	1,456
Gross Unrealized Losses	305	265
Fair Value	237,627	165,173
Securities held to maturity
Amortized Cost		12,682
Gross Unrealized Gains		86
Gross Unrealized Losses		6
Fair Value		12,762
U.S. government-sponsored collateralized mortgage obligations
Securities available for sale
Amortized Cost	16,326	26,137
Gross Unrealized Gains	330	243
Gross Unrealized Losses		7
Fair Value	16,656	26,373
Securities held to maturity
Amortized Cost		1,433
Gross Unrealized Gains		69
Fair Value		1,502
SBA asset-backed securities
Securities available for sale
Amortized Cost	16,249	32,461
Gross Unrealized Gains	871	286
Gross Unrealized Losses		24
Fair Value	$ 17,120	32,723
Securities held to maturity
Amortized Cost		5,308
Gross Unrealized Gains		124
Fair Value		5,432
Municipal bonds
Securities held to maturity
Amortized Cost		6,949
Gross Unrealized Gains		282
Fair Value		$ 7,231

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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