FAIR VALUE - Summary of assets measured at fair value on recurring basis (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Summary of assets measured on a recurring and nonrecurring basis
Loans held for sale	$ 1,965	$ 0
Loans held at fair value	23,321	0
Mortgage loans held for sale, at fair value	8,839	30,620
Fair Value, Recurring
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		55,562
Loans held for sale	1,965
Loans held at fair value	23,321
Equity securities	749	1,198
Guarantee asset	143	237
Equity warrants	825	160
Mortgage loans held for sale, at fair value	8,839	30,620
Fair Value, Recurring | U.S. Treasury debt
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		247
Fair Value, Recurring | U.S. Government Agency
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		3,522
Fair Value, Recurring | Corporate bonds
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		8,325
Fair Value, Recurring | Government CMO and MBS - commercial
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		878
Fair Value, Recurring | Corporate collateralized mortgage obligations and mortgage-backed securities
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		1,497
Fair Value, Recurring | IRLC
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value	229	1,473
Fair Value, Recurring | FSC
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value	46	(74)
Fair Value, Recurring | GNMA mortgage-backed securities - residential
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		26,650
Fair Value, Recurring | FNMA mortgage-backed securities - residential
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		14,443
Level 1
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value		0
Mortgage loans held for sale, at fair value		0
Level 1 | Fair Value, Recurring
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		247
Loans held for sale	1,965
Loans held at fair value	0
Derivative asset, fair value	0
Equity securities	627	709
Guarantee asset	0	0
Equity warrants	0	0
Mortgage loans held for sale, at fair value	0
Level 1 | Fair Value, Recurring | U.S. Treasury debt
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		247
Level 1 | Fair Value, Recurring | U.S. Government Agency
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		0
Level 1 | Fair Value, Recurring | Corporate bonds
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		0
Level 1 | Fair Value, Recurring | Government CMO and MBS - commercial
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		0
Level 1 | Fair Value, Recurring | Corporate collateralized mortgage obligations and mortgage-backed securities
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		0
Level 1 | Fair Value, Recurring | IRLC
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value		0
Level 1 | Fair Value, Recurring | GNMA mortgage-backed securities - residential
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		0
Level 1 | Fair Value, Recurring | FNMA mortgage-backed securities - residential
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		0
Level 2
Summary of assets measured on a recurring and nonrecurring basis
Equity securities		489
Level 2 | Fair Value, Recurring
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		53,202
Loans held for sale	0
Loans held at fair value	0
Equity securities	122
Guarantee asset	0	0
Equity warrants	0	0
Mortgage loans held for sale, at fair value	8,839	30,620
Level 2 | Fair Value, Recurring | U.S. Treasury debt
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		0
Level 2 | Fair Value, Recurring | U.S. Government Agency
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		3,522
Level 2 | Fair Value, Recurring | Corporate bonds
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		6,212
Level 2 | Fair Value, Recurring | Government CMO and MBS - commercial
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		878
Level 2 | Fair Value, Recurring | Corporate collateralized mortgage obligations and mortgage-backed securities
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		1,497
Level 2 | Fair Value, Recurring | IRLC
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value	0	0
Level 2 | Fair Value, Recurring | FSC
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value	46	(65)
Level 2 | Fair Value, Recurring | GNMA mortgage-backed securities - residential
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		26,650
Level 2 | Fair Value, Recurring | FNMA mortgage-backed securities - residential
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		14,443
Level 3
Summary of assets measured on a recurring and nonrecurring basis
Equity securities		0
Mortgage loans held for sale, at fair value		0
Level 3 | Fair Value, Recurring
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		2,113
Loans held for sale	0
Loans held at fair value	23,321
Equity securities	0
Guarantee asset	143	237
Equity warrants	825	160
Mortgage loans held for sale, at fair value	0
Level 3 | Fair Value, Recurring | U.S. Treasury debt
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		0
Level 3 | Fair Value, Recurring | U.S. Government Agency
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		0
Level 3 | Fair Value, Recurring | Corporate bonds
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		2,113
Level 3 | Fair Value, Recurring | Government CMO and MBS - commercial
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		0
Level 3 | Fair Value, Recurring | Corporate collateralized mortgage obligations and mortgage-backed securities
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		0
Level 3 | Fair Value, Recurring | IRLC
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value	229	1,473
Level 3 | Fair Value, Recurring | FSC
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, fair value	$ 0	(9)
Level 3 | Fair Value, Recurring | GNMA mortgage-backed securities - residential
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		0
Level 3 | Fair Value, Recurring | FNMA mortgage-backed securities - residential
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		$ 0