Leases (Schedule of Leased Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization	Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization
Operating lease, assets	$ 8,911	$ 10,324
Finance lease, assets	$ 334	$ 1,478
Current liabilities
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities
Operating lease liabilities, current	$ 1,463	$ 1,457
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current portion of borrowings outstanding	Current portion of borrowings outstanding
Finance lease liabilities, current	$ 150	$ 1,188
Liabilities, Noncurrent
Operating lease liabilities, noncurrent	$ 9,733	$ 11,196
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-term portion of borrowings outstanding	Long-term portion of borrowings outstanding
Finance lease liabilities, noncurrent	$ 190	$ 280
Finance lease, right-of-use asset, accumulated amortization	$ 300	$ 200