FAIR VALUES OF FINANCIAL INSTRUMENTS - Reconciliation and Income Statement Unobservable Inputs (Level 3) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Total realized/unrealized gains or losses
Beginning balance	$ 5,254	$ 5,031
Total realized/unrealized gains or losses - Included in earnings	0	0
Total realized/unrealized gains or losses - Included in other comprehensive income	$ (373)	$ 223
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax, Portion Attributable to Parent	Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax, Portion Attributable to Parent
Transfers	$ 0	$ 0
Settlements	(350)	0
Ending balance	4,531	5,254
State and municipal obligations
Total realized/unrealized gains or losses
Beginning balance	1,895	1,895
Total realized/unrealized gains or losses - Included in earnings	0	0
Total realized/unrealized gains or losses - Included in other comprehensive income	0
Transfers	0	0
Settlements	(350)	0
Ending balance	1,545	1,895
Collateralized debt obligations
Total realized/unrealized gains or losses
Beginning balance	3,359	3,136
Total realized/unrealized gains or losses - Included in earnings	0	0
Total realized/unrealized gains or losses - Included in other comprehensive income	(373)	223
Settlements	0	0
Ending balance	2,986	3,359
Other securities
Total realized/unrealized gains or losses
Beginning balance	0
Total realized/unrealized gains or losses - Included in earnings	0	0
Settlements	$ 0	0
Ending balance		$ 0