Leases (Lease Expense and Cash Outflows from Operating and Finance Leases) (Details) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Leases [Abstract]
Operating lease cost	$ 1,125	$ 1,166
Short-term lease cost	103	91
Variable lease cost	56	52
Amortization	14	16
Interest on lease liabilities	2	3
Total lease cost	1,300	1,328
Cash paid for amounts included in measurement of lease liabilities:
Operating cash flows from operating leases	1,235	1,266
Operating cash flows from finance leases	2	3
Financing cash flows from finance leases	14	15
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	0	7
Finance leases	$ 0	$ 0