FAIR VALUE - Summary of assets measured at fair value on recurring basis (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financial Assets
Mortgage loans held for sale, at fair value	$ 12,105	$ 8,839
IRLC, net	1,490
Loans held for sale	0	1,965
Financial Liabilities
Forward commitments and FSC	537
Fair Value, Recurring
Financial Assets
Mortgage loans held for sale, at fair value	12,105	8,839
Loans held at fair value	15,464	23,321
Equity securities	729	749
Guarantee asset	158	143
Equity warrants	825	825
Swap derivative asset	1,490
Loans held for sale		1,965
Financial Liabilities
Swap derivative liabilities	537
Fair Value, Recurring | IRLC, net
Financial Assets
IRLC, net	319	229
Fair Value, Recurring | Forward commitments and FSC
Financial Liabilities
Forward commitments and FSC	261	46
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Mortgage loans held for sale, at fair value		0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring
Financial Assets
Mortgage loans held for sale, at fair value	0
Loans held at fair value	0	0
Equity securities	607	627
Guarantee asset	0	0
Equity warrants	0	0
Swap derivative asset	0
Loans held for sale		1,965
Financial Liabilities
Swap derivative liabilities	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | IRLC, net
Financial Assets
IRLC, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | Forward commitments and FSC
Financial Liabilities
Forward commitments and FSC	0	0
Significant Other Observable Inputs (Level 2)
Financial Assets
Equity securities		122
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring
Financial Assets
Mortgage loans held for sale, at fair value	12,105	8,839
Loans held at fair value	0	0
Equity securities	122
Guarantee asset	0	0
Equity warrants	0	0
Swap derivative asset	1,490
Loans held for sale		0
Financial Liabilities
Swap derivative liabilities	537
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | IRLC, net
Financial Assets
IRLC, net	0	0
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | Forward commitments and FSC
Financial Liabilities
Forward commitments and FSC	261	46
Significant Unobservable Inputs (Level 3)
Financial Assets
Mortgage loans held for sale, at fair value		0
Equity securities		0
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring
Financial Assets
Mortgage loans held for sale, at fair value	0
Loans held at fair value	15,464	23,321
Equity securities	0
Guarantee asset	158	143
Equity warrants	825	825
Swap derivative asset	0
Loans held for sale		0
Financial Liabilities
Swap derivative liabilities	0
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | IRLC, net
Financial Assets
IRLC, net	319	229
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | Forward commitments and FSC
Financial Liabilities
Forward commitments and FSC	$ 0	$ 0