SECURITIES - Contractual maturity (Details)	1 Months Ended	3 Months Ended
	Feb. 29, 2020 USD ($) security	Mar. 31, 2020 USD ($) security	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($) security
Securities
Pledged as collateral		$ 46,300,000
Fair Value				$ 26,927,000
Amortized Cost-Available-for-Sale
After 1 year through 5 years		5,500,000
After 5 years through 10 years		8,330,000
Over 10 years		4,749,000
Total for contractual maturity		18,579,000
Amortized Cost		243,875,000		237,574,000
Fair Value-Available-for-Sale
After 1 year through 5 years		5,578,000
After 5 years through 10 years		8,509,000
Over 10 years		4,774,000
Total for contractual maturity		18,861,000
Total		249,789,000		239,473,000
Amortized Cost-Held-to-Maturity
Gross Unrealized Gains				561,000
Amortized Cost				$ 26,372,000
Sales
Proceeds		70,729,000
Gross gains		2,521,000
Calls
Proceeds		1,667,000	$ 2,696,000
Gross gains		$ 4,000
Mortgage-backed securities
Securities
Number of securities pledged | security		20		7
Pledged as collateral		$ 46,300,000		$ 15,700,000
HTM securities
Securities
Number of securities sold | security	5
Sold HTM securities
Securities
Realized gain	$ 1,300,000
Amortized Cost-Held-to-Maturity
Amortized Cost	4,500,000
Transferred securities
Securities
Transfer amount	21,500,000
Fair Value-Available-for-Sale
Total	22,100,000
Amortized Cost-Held-to-Maturity
Gross Unrealized Gains	$ 522,000
U.S. government agency and government-sponsored residential mortgage-backed securities
Securities
Fair Value				12,762,000
Amortized Cost-Available-for-Sale
No single maturity date		181,997,000
Amortized Cost		181,997,000		163,982,000
Fair Value-Available-for-Sale
No single maturity date		186,474,000
Total		186,474,000		165,173,000
Amortized Cost-Held-to-Maturity
Gross Unrealized Gains				86,000
Amortized Cost				12,682,000
U.S. government-sponsored collateralized mortgage obligations
Securities
Fair Value				1,502,000
Amortized Cost-Available-for-Sale
No single maturity date		24,745,000
Amortized Cost		24,745,000		26,137,000
Fair Value-Available-for-Sale
No single maturity date		25,615,000
Total		25,615,000		26,373,000
Amortized Cost-Held-to-Maturity
Gross Unrealized Gains				69,000
Amortized Cost				1,433,000
SBA asset-backed securities
Securities
Fair Value				5,432,000
Amortized Cost-Available-for-Sale
No single maturity date		18,554,000
Amortized Cost		18,554,000		32,461,000
Fair Value-Available-for-Sale
No single maturity date		18,839,000
Total		$ 18,839,000		32,723,000
Amortized Cost-Held-to-Maturity
Gross Unrealized Gains				124,000
Amortized Cost				5,308,000
SBA asset-backed securities | Minimum
Securities
Maturity period		2 years
SBA asset-backed securities | Maximum
Securities
Maturity period		30 years
Municipal bonds
Securities
Fair Value		$ 5,300,000		7,231,000
Amortized Cost-Available-for-Sale
Amortized Cost		5,249,000
Fair Value-Available-for-Sale
Total		$ 5,275,000
Amortized Cost-Held-to-Maturity
Gross Unrealized Gains				282,000
Amortized Cost				6,949,000
Municipal bonds | Minimum
Securities
Maturity period		4 years
Callable period		1 month
Municipal bonds | Maximum
Securities
Maturity period		17 years
Callable period		3 years
U.S. government and government-sponsored enterprise obligations
Amortized Cost-Available-for-Sale
Amortized Cost		$ 13,330,000		14,994,000
Fair Value-Available-for-Sale
Total		$ 13,586,000		$ 15,204,000
U.S. government and government-sponsored enterprise obligations | Minimum
Securities
Maturity period		3 years
Callable period		1 month
U.S. government and government-sponsored enterprise obligations | Maximum
Securities
Maturity period		8 years
Callable period		2 years