Employee Benefit Plans - Components of net periodic benefit cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
PENSION AND RETIREMENT PLANS LIABILITIES
Settlement loss	$ 18,286	$ 2,921
Retirement Income Plan
PENSION AND RETIREMENT PLANS LIABILITIES
Interest cost	22	972	$ 988
Expected return on Plan assets			(1,509)
Amortization of net losses	226	1,010	808
Settlement loss	18,286	2,921
Net periodic benefit cost	18,534	4,903	287
Decreases (increases) in amount recognized in AOCI	$ (22,476)	$ (992)	$ 3,361