Other Noncurrent Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Other Liabilities Disclosure [Abstract]
Pension liabilities	$ 35,921	$ 36,782
Postretirement benefits other than pensions	53,293	55,310
Obligations under license agreement	10,254
Interest rate swap agreement		2,400
Incentive and deferred compensation	3,468	3,421
Restructuring	908	3,320
Other	2,983	311
Total	$ 106,827	$ 101,544