Leases (Lease Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Operating leases:
Other long-term assets, net	$ 976	$ 1,437
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets, Noncurrent	Other Assets, Noncurrent
Accrued liabilities	$ 751	$ 693
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued Liabilities, Current	Accrued Liabilities, Current
Other long-term liabilities	$ 373	$ 1,036
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Total operating lease liabilities	$ 1,124	$ 1,729
Finance leases:
Property, plant and equipment	7,307	14,989
Accumulated depreciation	(1,994)	(1,989)
Property, plant and equipment, net	$ 5,313	$ 13,000
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, plant and equipment, net	Property, plant and equipment, net
Current portion of long-term debt	$ 2,485	$ 4,464
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Long-term Debt and Lease Obligation, Current	Long-term Debt and Lease Obligation, Current
Long-term debt	$ 1,599	$ 1,305
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-term Debt and Lease Obligation	Long-term Debt and Lease Obligation
Total finance lease liabilities	$ 4,084	$ 5,769
Weighted-average remaining lease term
Operating leases	1 year 7 months 6 days	2 years 6 months
Finance leases	1 year 7 months 6 days	1 year 3 months 18 days
Weighted-average discount rate
Operating leases	10.86%	10.84%
Finance leases	8.12%	8.64%