Other Liabilities - Schedule of Other Liabilities (Long-term) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Other Liabilities Disclosure [Abstract]
Lease guarantee contingency		$ 10,724
Environmental reserves	$ 6,600	6,658
Supplemental executive retirement plan liability	1,622	1,776
Pension liability	968	956
Other long-term liabilities	2,619	2,468
Other liabilities (long-term), Total	$ 11,809	$ 22,582