Leases (Balance Sheet Disclosures) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Operating leases
Right of use assets from operating leases	$ 2,097	$ 2,444
Account payable and accrued liabilities	1,295
Noncurrent operating lease obligation	579	917
Total lease liabilities	1,874
Financing leases
Plant, property and equipment, net	1,542
Long-term debt and financing leases, classified as current	439
Long-term debt and financing leases, less current maturities	1,110
Total lease liabilities	$ 1,549	$ 1,653