MORTGAGE BANKING ACTIVITIES - OTHER INFORMATION RELATING TO MSRS (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
MORTGAGE BANKING ACTIVITIES
Fair value of mortgage servicing rights portfolio	$ 16,941	$ 17,159
Monthly weighted average prepayment rate of unpaid principal balance (as percent)	134.00%	125.00%
Discount rate (as percent)	9.84%	10.25%
Weighted average foreclosure rate	0.12%	0.06%
Weighted average life in years	7 years 3 months 10 days	7 years 6 months 3 days