SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN - Components of Net Periodic Pension Cost (Details) - Supplemental Executive Retirement Plan [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Components of net periodic pension cost [Abstract]
Service cost	$ 362	$ 429	$ 723	$ 857
Interest cost	346	292	692	583
Amortization of prior service cost	279	274	559	549
Amortization of loss	372	1,234	744	2,468
Total net periodic benefit cost	$ 1,359	$ 2,229	$ 2,718	$ 4,457