Summary of Significant Accounting Policies, Classification of Venezuela as a Highly Inflationary Economy and Devaluation of Its Currency (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2014 USD ($) VEB / $	Mar. 31, 2014 USD ($) VEB / $ Mechanism	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Mar. 31, 2015 VEB / $	Dec. 31, 2012 USD ($)
Operations in Venezuela [Abstract]
Total assets			$ 1,505,843	$ 1,614,434
Monetary assets			289,354	288,415	$ 525,153		$ 320,025
Operations in Venezuela [Abstract]
Foreign currency transaction losses on net monetary assets denominated in bolivar			10,200	46,300
Other Income (Expense), Net [Member]
Operations in Venezuela [Abstract]
Foreign currency transaction losses on net monetary assets denominated in bolivar	$ 25,300	$ 14,700	10,200
Venezuela [Member]
Operations in Venezuela [Abstract]
Total assets			7,900	14,600
Monetary assets			4,300	8,200
Operations in Venezuela [Abstract]
Number of foreign exchange mechanisms | Mechanism		2
SICAD I [Member] | Venezuela [Member]
Operations in Venezuela [Abstract]
Foreign currency exchange rate | VEB / $		10.7
SICAD II [Member] | Venezuela [Member]
Operations in Venezuela [Abstract]
Foreign currency exchange rate | VEB / $	50
SIMADI [Member] | Venezuela [Member]
Operations in Venezuela [Abstract]
Foreign currency exchange rate | VEB / $						193
Correct Certain Accounting Errors for Hyper-Inflationary Adjustments with Respect to Operations in Venezuela [Member]
Operations in Venezuela [Abstract]
Out-of-period adjustment to income statement			6,300
Subsidiary [Member] | Venezuela [Member]
Operations in Venezuela [Abstract]
Payable to parent company			$ 33,700	$ 34,800
Sales Revenue [Member] | Geographic Concentration Risk [Member]
Operations in Venezuela [Abstract]
Concentration risk percentage			0.20%	1.00%	1.10%