Leases (Supplemental Balance Sheet Information) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Finance leases:
Property, plant and equipment, at cost	$ 127	$ 127
Accumulated amortization	(70)	(44)
Property and equipment, net	57	83
Current portion of notes payable and long-term debt	55	57
Notes payable, long-term debt and other obligations, less current portion	41	96
Total finance lease liabilities	$ 96	$ 153
Weighted average remaining lease term in years:
Operating leases	3 years 4 months 9 days	4 years 2 months 23 days
Finance leases	1 year 10 months 2 days	2 years 8 months 15 days
Weighted average discount rate:
Operating leases	9.60%	10.20%
Finance leases	8.21%	7.82%
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]	Notes payable, long-term debt and other obligations, less current portion	Notes payable, long-term debt and other obligations, less current portion
Financing lease equipment
Finance leases:
Property, plant and equipment, at cost	$ 748	$ 748
Accumulated amortization	(718)	(686)
Property and equipment, net	$ 30	$ 62