FAIR VALUE - Summary of assets measured at fair value on recurring basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Net income available to common shareholders	Net income available to common shareholders
Corporate bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 2,113	$ 0
Loans acquired	4,000	2,113
Unrealized gains, net	102
Transfer to held-to-maturity	(6,215)
Ending balance	0	2,113
Loans Held at Fair Value
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0	0
Loans acquired	35,616
Gains (losses) in net income, net	(94)
Settlements	(12,201)
Ending balance	23,321	0
FSC
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(9)	(89)
Loans acquired	9	(182)
Gains (losses) in net income, net		262
Ending balance	0	(9)
Guarantee Asset
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	237	232
Loans originated	1	2
Gains (losses) in net income, net	(75)	32
Settlements	(20)	(29)
Ending balance	143	237
IRLC
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,473	9,841
Loans acquired	3,213	19,526
Originations	(5,048)	(25,804)
Gains (losses) in net income, net	591	(2,090)
Ending balance	229	1,473
Equity Warrants
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	160	0
Loans acquired	344	160
Gains (losses) in net income, net	321
Ending balance	$ 825	$ 160