LOANS - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group	$ 2.5	$ 1.7
Loans serviced for others, not reported as assets	462.6	518.1
Escrow deposit	2.1	2.7
Fair value, based on valuations	$ 2.9	$ 3.3
Servicing Liability, Fair Value, Change in Fair Value, Valuation Input, Statement of Income or Comprehensive Income [Extensible Enumeration]	Gain (Loss) on Sale of Mortgage Loans	Gain (Loss) on Sale of Mortgage Loans
Valuation allowance	$ 0.0	$ 0.0
Assumptions used to estimate fair value, discount rate (percent)	12.50%	12.50%
Assumptions used to estimate fair value, weighted average life	8 years
Director and Executive Officer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	$ 46.1
Advances	46.7
Repayments	48.1
Ending Balance	$ 44.7	$ 46.1
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assumptions used to estimate fair value, prepayment speed (percent)	197.00%	238.00%
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assumptions used to estimate fair value, prepayment speed (percent)	100.00%	113.00%