Other Liabilities - Schedule of Other Liabilities (Long-term) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Other Liabilities Disclosure [Abstract]
Lease guarantee contingency	$ 10,562	$ 10,402
Environmental reserves	6,815	3,702
Supplemental executive retirement plan liability	1,871	2,026
Pension liability	1,285	1,207
Deferred gain on sale of assets		1,237
Other long-term liabilities	2,280	1,220
Other liabilities (long-term), Total	$ 22,813	$ 19,794