LOANS - Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Allowance for loan losses:
Beginning balance	$ 31,620	$ 32,663	$ 30,742	$ 35,820
Impact of ASC 326 adoption on non-PCD loans				(718)
Impact of ASC 326 adoption on PCD loans				1,115
Provision for credit loss	450	0	450	0
Loans charged-off	(426)	(888)	(657)	(5,011)
Recoveries	756	682	1,865	1,251
Total ending allowance balance	32,400	32,457	32,400	32,457
Commercial, financial and agriculture
Allowance for loan losses:
Beginning balance	4,874	4,158	4,873	6,214
Impact of ASC 326 adoption on non-PCD loans				(1,319)
Impact of ASC 326 adoption on PCD loans				166
Provision for credit loss	(313)	0	(313)	0
Loans charged-off	(94)	(490)	(146)	(1,476)
Recoveries	44	242	97	325
Total ending allowance balance	4,511	3,910	4,511	3,910
Commercial real estate
Allowance for loan losses:
Beginning balance	17,773	17,578	17,552	24,319
Impact of ASC 326 adoption on non-PCD loans				(4,607)
Impact of ASC 326 adoption on PCD loans				575
Provision for credit loss	629	0	629	0
Loans charged-off	(24)	(166)	(27)	(3,007)
Recoveries	290	161	514	293
Total ending allowance balance	18,668	17,573	18,668	17,573
Consumer real estate
Allowance for loan losses:
Beginning balance	8,492	10,280	7,889	4,736
Impact of ASC 326 adoption on non-PCD loans				5,257
Impact of ASC 326 adoption on PCD loans				372
Provision for credit loss	62	0	62	0
Loans charged-off	(140)	(124)	(147)	(263)
Recoveries	338	183	948	237
Total ending allowance balance	8,752	10,339	8,752	10,339
Consumer installment
Allowance for loan losses:
Beginning balance	481	647	428	551
Impact of ASC 326 adoption on non-PCD loans				(49)
Impact of ASC 326 adoption on PCD loans				2
Provision for credit loss	72	0	72	0
Loans charged-off	(168)	(108)	(337)	(265)
Recoveries	84	96	306	396
Total ending allowance balance	$ 469	$ 635	$ 469	$ 635