Net Periodic Pension Cost (Schedule of Net Benefit Costs) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net Periodic Pension Cost [Abstract]
Interest cost	$ 75	$ 68
Amortization of net loss	27	43
Expected return on plan assets	(191)	(177)
Net periodic pension cost	(89)	(66)
Contributed amount	$ 0	$ 0