FAIR VALUE - Summary of assets measured at level 3 fair value on recurring basis (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Summary of assets measured on a recurring and nonrecurring basis
Other real estate owned, gross	$ 0		$ 0
Significant Unobservable Inputs (Level 3)
Summary of assets measured on a recurring and nonrecurring basis
recorded investment			400,000
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | Corporate bonds
Summary of assets measured on a recurring and nonrecurring basis
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	0	$ 6,215,000		$ 2,113,000
Loans acquired		4,000,000
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | Loans Held at Fair Value
Summary of assets measured on a recurring and nonrecurring basis
Settlements	(3,526,000)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	20,807,000	6,380,000	23,321,000
Loans acquired	1,162,000	6,380,000
Losses in net income, net	(150,000)
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | Forward commitments and FSC
Summary of assets measured on a recurring and nonrecurring basis
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	0	0		(9,000)
Loans acquired		9,000
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | Guarantee Asset
Summary of assets measured on a recurring and nonrecurring basis
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	235,000	206,000	143,000	237,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances	5,000
Losses in net income, net	87,000	(31,000)
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | IRLC, net
Summary of assets measured on a recurring and nonrecurring basis
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	723,000	990,000	229,000	1,473,000
Loans acquired	886,000	1,614,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances	(1,486,000)	(1,354,000)
Losses in net income, net	1,094,000	(743,000)
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | Equity Warrants
Summary of assets measured on a recurring and nonrecurring basis
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	825,000	402,000	$ 825,000	$ 160,000
Loans acquired		$ 242,000
Commercial | Fair Value, Nonrecurring
Summary of assets measured on a recurring and nonrecurring basis
Net recorded investment	188,000
Commercial | Significant Unobservable Inputs (Level 3) | Fair Value, Nonrecurring
Summary of assets measured on a recurring and nonrecurring basis
Net recorded investment	188,000
Commercial | Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Nonrecurring
Summary of assets measured on a recurring and nonrecurring basis
Net recorded investment	0
Commercial | Significant Other Observable Inputs (Level 2) | Fair Value, Nonrecurring
Summary of assets measured on a recurring and nonrecurring basis
Net recorded investment	$ 0