RETIREMENT PLANS - Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Jul. 22, 2021
Pension benefits
Components of the plan's net periodic pension cost
Service cost	$ 57	$ 54
Interest cost	565	572
Expected return on plan assets	(925)	(687)
Net periodic pension expense (benefit)	(303)	(61)
Funded status of plan
Projected benefit obligation			$ 15,400
Plan Net Assets			12,100
Postretirement benefits
Components of the plan's net periodic pension cost
Service cost	36	35
Interest cost	33	41
Net periodic pension expense (benefit)	$ 69	$ 76
Funded status of plan
Projected benefit obligation			$ 400