Condensed Consolidated Stockholders' Equity Statement (Unaudited) - 3 months ended Apr. 02, 2017 - USD ($) shares in Thousands, $ in Thousands	Total	Mandatory Convertible Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]
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)	25,581				25,687			(106)
Foreign currency translation, net of $0.1 million tax	(9,836)						(9,779)	(57)
Adjustments to pension and postretirement liability, net of $0.2 million tax	(368)						368
Other comprehensive loss, net of tax	(9,468)						(9,411)
Exercise of stock options, net of tax withholding forfeitures	(710)			(709)		$ (1)
Exercise of stock options, net of tax withholding forfeitures, shares						15
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	(3,672)			(3,628)		$ (44)
Conversion of restricted stock units into common stock, net of tax withholding forfeitures, shares						75
Share-based compensation	3,930			3,930
Preferred stock dividends	(8,733)				(8,733)
Common stock dividends ($0.05 per share)	(2,124)				(2,124)
Ending balance, shares at Apr. 02, 2017		52	50,335
Ending balance at Apr. 02, 2017	$ 1,466,121	$ 1	$ 503	$ 1,115,683	$ 798,642	$ (401,071)	$ (48,478)	$ 841
Ending balance, Treasury shares at Apr. 02, 2017						(8,065)