Employee Benefit Plans - Pension Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net periodic benefit cost
Service cost	$ 68	$ 69
Interest cost	$ 1,686	1,984
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense.
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense.
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense.
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense.
Employer contributions	$ 3,189	2,052
Total employer contributions to pension plans	3,200	2,100
Pension And Postretirement [Member]
Net periodic benefit cost
Service cost	68	74	$ 80
Interest cost	1,686	1,984	2,448
Expected return on plan assets	(2,410)	(2,530)	(2,460)
Amortization of prior service cost	224	150	(169)
Amortization of net loss	3,340	1,739	1,768
Settlement loss		552
Net periodic benefit cost	$ 2,908	$ 1,969	$ 1,667