Condensed Consolidated Stockholders' Equity Statement (Unaudited) - 6 months ended Jul. 02, 2017 - USD ($) shares in Thousands, $ in Thousands	Total	Mandatory Convertible Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interest
Beginning balance, shares at Dec. 31, 2016		52	50,335
Beginning balance at Dec. 31, 2016	$ 1,461,317	$ 1	$ 503	$ 1,116,090	$ 783,812	$ (401,026)	$ (39,067)	$ 1,004
Beginning balance, Treasury shares at Dec. 31, 2016						(8,155)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	61,472				61,664			(192)
Foreign currency translation, net of $0.4 million tax	(26,943)						(26,895)	(48)
Adjustments to pension and postretirement liability, net of $0.5 million tax	774						774
Other comprehensive loss, net of tax	(26,169)
Exercise of stock options, net of tax withholding forfeitures	(1,042)			(1,034)		$ (8)
Exercise of stock options, net of tax withholding forfeitures (in shares)						22
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	(3,684)			(4,217)		$ 533
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)						95
Share-based compensation	8,924			8,924
Preferred stock dividends	(17,466)				(17,466)
Common stock dividends ($0.10 per share)	(4,249)				(4,249)
Ending balance, shares at Jul. 02, 2017		52	50,335
Ending balance at Jul. 02, 2017	$ 1,479,103	$ 1	$ 503	$ 1,119,763	$ 823,761	$ (400,501)	$ (65,188)	$ 764
Ending balance, Treasury shares at Jul. 02, 2017						(8,038)