FAIR VALUE - Summary of assets measured at fair value on recurring basis (Details) $ in Thousands	Sep. 30, 2022 USD ($) loan	Dec. 31, 2021 USD ($)
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		$ 55,562
Number of Loans, Non-accruals, fair value | loan	68
Mortgage loans held for sale, at fair value	$ 12,743	30,620
U.S. Treasury debt
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		247
U.S. Government Agency
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		3,522
Corporate bonds
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		8,325
Government CMO and MBS
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		878
Corporate CMO and MBS
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		1,497
Recurring
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		55,562
Loans held at fair value	22,871
Equity securities	748	1,198
Guarantee asset	159	237
Equity warrants	827	160
Mortgage loans held for sale, at fair value	12,743	30,620
Recurring | U.S. Treasury debt
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		247
Recurring | U.S. Government Agency
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		3,522
Recurring | Corporate bonds
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		8,325
Recurring | Government CMO and MBS
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		878
Recurring | Corporate CMO and MBS
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		1,497
Recurring | IRLC,net
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, Fair value	138	1,473
Recurring | Forward Commitment
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, Fair value	1,128	(74)
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
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 | Recurring
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		247
Equity securities	626	709
Level 1 | Recurring | U.S. Treasury debt
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		247
Level 2 | Recurring
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		53,202
Equity securities	122	489
Mortgage loans held for sale, at fair value	12,743	30,620
Level 2 | 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 | Recurring | Corporate bonds
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		6,212
Level 2 | Recurring | Government CMO and MBS
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		878
Level 2 | Recurring | Corporate CMO and MBS
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		1,497
Level 2 | Recurring | Forward Commitment
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, Fair value	1,139	(65)
Level 2 | 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 | 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 | Recurring
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		2,113
Loans held at fair value	22,871
Guarantee asset	159	237
Equity warrants	827	160
Level 3 | Recurring | Corporate bonds
Summary of assets measured on a recurring and nonrecurring basis
Available-for-sale securities, at fair value		2,113
Level 3 | Recurring | IRLC,net
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, Fair value	138	1,473
Level 3 | Recurring | Forward Commitment
Summary of assets measured on a recurring and nonrecurring basis
Derivative asset, Fair value	$ (11)	$ (9)