RETIREMENT PLANS - Plan Assets and Liabilities (Details) - Deferred compensation arrangement - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance, trust asset	$ 3,657	$ 0	$ 0
Contributions	207	3,264	0
Gain on trust assets	359	499	0
Distributions	(509)	(106)	0
Ending balance, trust asset	3,714	3,657	0
Defined Benefit Plan, Deferred Compensation Liability [Roll Forward]
Beginning balance, deferred compensation liability	3,657	2,978	2,383
Deferred compensation	207	350	751
Expense on deferred compensation liability	359	506	8
Distributions	(509)	(177)	(164)
Ending balance, deferred compensation liability	3,714	3,657	2,978
Deferred Compensation Arrangement with Individual, Recorded Liability [Roll Forward]
Beginning balance, deferred compensation liability	4,560	5,007	4,135
Deferred compensation	606	586	679
Expense on deferred compensation liability	251	270	236
Distributions	(45)	(1,303)	(43)
Ending balance, deferred compensation liability	$ 5,372	$ 4,560	$ 5,007