FAIR VALUE - Summary of assets measured at level 3 fair value on recurring basis (Details) - Significant Unobservable Inputs (Level 3) - Fair Value, Recurring - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Loans Held at Fair Value
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 2,468	$ 6,112	$ 3,182	$ 7,283	$ 7,283
Gains/(losses) in net income, net	7	32	17	89
Net charge-offs	3	(6)	(46)	(57)
Settlements	(720)	(1,039)	(1,395)	(2,216)
Balance at end of period	1,758	5,099	1,758	5,099	3,182
Guarantee Asset
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	250	261	243	235	235
Loans originated	8	9	12	20
Gains/(losses) in net income, net	28	(4)	55	32
Settlements	(24)	(22)	(48)	(43)
Balance at end of period	262	244	262	244	243
Equity Warrants
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	756	765	756	765	765
Balance at end of period	$ 756	$ 765	$ 756	$ 765	$ 756