Leases - Balance Sheet Location (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Operating leases
Operating lease right-of-use assets	$ 15,131	$ 16,069
Other current liabilities	2,852	2,553
Long-term operating lease liabilities (Note 9)	12,279	13,516
Total operating lease liabilities	15,131	16,069
Finance leases
Property, plant, and equipment	1,162	1,116
Accumulated amortization	(1,011)	(869)
Property, plant, and equipment - net	151	247
Current maturities of long-term debt	98	119
Long-term debt	53	128
Total finance lease liabilities	$ 151	$ 247
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other accrued liabilities	Other accrued liabilities
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant, and equipment - net (Note 8)	Property, plant, and equipment - net (Note 8)
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Long-term Debt and Lease Obligation, Current	Long-term Debt and Lease Obligation, Current
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term portion	Long-term portion