Employee Benefit Plans (Schedule of Net Benefit Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Defined Benefit Plan Disclosure [Line Items]
Pension settlement	$ (414)	$ (988)	$ (414)	$ (988)
Defined benefit pension plan
Defined Benefit Plan Disclosure [Line Items]
Interest cost	1,094	1,067	2,187	2,135
Expected return on plan assets	(1,433)	(1,824)	(2,865)	(3,648)
Pension settlement	(414)	(988)	(414)	(988)
Amortization of prior service credits	(177)	(43)	(73)	(87)
Net benefit (credit) cost	(930)	(1,788)	(1,165)	(2,588)
Other postretirement benefits plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	70	85	141	170
Interest cost	502	528	1,003	1,056
Amortization of other actuarial losses (gains)	(627)		(1,254)	0
Net benefit (credit) cost	$ (55)	$ 613	$ (110)	$ 1,226