Leases (Balance Sheet Disclosures) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
Operating leases
Right of use assets from operating leases	$ 2,444	$ 14,999
Account payable and accrued liabilities	1,259	12,467
Noncurrent operating lease obligations	917	$ 2,532
Total lease liabilities	2,176
Financing leases
Plant, property and equipment, net	1,659
Long-term debt and financing leases, classified as current	432
Long-term debt and financing leases, less current maturities	1,221
Total lease liabilities	$ 1,653