Net Periodic Pension Cost (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
Net Periodic Pension Cost [Abstract]
Interest cost	$ 75	$ 67	$ 150	$ 135
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Cost and Expense, Operating	Other Cost and Expense, Operating	Other Cost and Expense, Operating	Other Cost and Expense, Operating
Amortization of net loss	$ 27	$ 44	$ 54	$ 87
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Cost and Expense, Operating	Other Cost and Expense, Operating	Other Cost and Expense, Operating	Other Cost and Expense, Operating
Expected return on plan assets	$ (191)	$ (177)	$ (382)	$ (354)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Cost and Expense, Operating	Other Cost and Expense, Operating	Other Cost and Expense, Operating	Other Cost and Expense, Operating
Net periodic pension cost	$ (89)	$ (66)	$ (178)	$ (132)
Contributed amount	$ 0	$ 0	$ 0	$ 0