Income Taxes (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Effective Income Tax Rate Reconciliation, Percent [Abstract]
U.S. federal income tax expense (benefit)	$ 33,408	$ (27,815)	$ 12,185
U.S. state income taxes, net of federal income tax benefit	786	(355)	496
U.S. domestic manufacturing deductions and credits	(1,210)	(661)	(2,504)
Capital loss on sale of equity interest in Brand with no realizable tax benefit	0	16,106	0
Difference in effective tax rates on international earnings and remittances	675	2,006	5,095
Uncertain tax position contingencies and settlements	(1,517)	(1,886)	1,416
Changes in realization on beginning of the year deferred tax assets	2,758	1,978	923
Forward Loss Provisions in SBB Contract with no realizable tax benefits	0	15,768	0
Restructuring and impairment charges with no realizable tax benefits	0	0	8,508
U.S. non-deductible expenses	664	724	874
(Income) loss related to the Infrastructure Transaction	0	(644)	580
Effective Income Tax Rate Reconciliation, Tax Cuts And Jobs Act Of 2017, Amount	48,680	0	0
Cumulative effect of change in statutory tax rates/laws	(153)	(388)	340
Income from unconsolidated entities	0	2,098	62
Other, net	(288)	(294)	(297)
Total income tax expense	$ 83,803	$ 6,637	$ 27,678
Annual effective income tax rate	87.80%	(8.40%)	79.50%