Defined Benefit Plans (Net Periodic Benefit Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 30	$ 33	$ 72	$ 65
Interest cost	41	40	87	80
Expected return on plan assets	(59)	(57)	(118)	(113)
Amortization of net (gain) loss	(2)		(4)
Settlement gain				(49)
Net periodic benefit expense (income)	10	16	37	(17)
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	6		10	1
Interest cost	1	2	18	4
Accretion of prior service cost	(5)	(5)	(10)	(10)
Amortization of net (gain) loss	1	4	5	4
Net periodic benefit expense (income)	$ 3	$ 1	$ 23	$ (1)