Other Noncurrent Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Liabilities Noncurrent [Abstract]
Restricted Insurance Settlements	$ 20,278	$ 21,171
Non-current income taxes payable	7,644	15,825
Uncertain Tax Positions (Includes Interest and Penalties)	8,097	7,970
Deferred And Other Long-Term Compensation	6,886	5,905
Other	624	625
Total	$ 43,529	$ 51,496