Condensed Consolidated Stockholders' Equity Statement (Unaudited) - 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 (in shares) at Dec. 31, 2017		(52)	(50,335)			(8,316)
Beginning balance at Dec. 31, 2017	$ 1,434,866	$ 1	$ 503	$ 1,123,832	$ 833,610	$ (425,685)	$ (98,026)	$ 631
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of change in accounting principles	(29,041)				(29,041)
Net income (loss)	2,570				2,618			(48)
Other comprehensive income, net of tax	(31,392)						(31,408)	16
Exercise of stock options, net of tax withholding forfeitures	(361)			(352)		$ (9)
Exercise of stock options, net of tax withholding forfeitures (in shares)						7
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	(1,142)			(1,242)		$ 100
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)						27
Share repurchase program	(75,270)					$ (75,270)
Share repurchase program (in shares)						(1,050)
Share-based compensation	3,126			3,126
Redemption of stockholders' rights agreement	(411)				(411)
Preferred stock dividends	(8,733)				(8,733)
Common stock dividends ($0.05 per share)	(2,066)				(2,066)
Ending balance (in shares) at Apr. 01, 2018		(52)	(50,335)			(9,332)
Ending balance at Apr. 01, 2018	1,292,146	$ 1	$ 503	1,125,364	795,977	$ (500,864)	(129,434)	599
Beginning balance (in shares) at Dec. 31, 2018		(52)	(50,335)			(10,939)
Beginning balance at Dec. 31, 2018	1,387,588	$ 1	$ 503	1,139,395	922,000	$ (599,845)	(74,907)	441
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	25,178				25,202			(24)
Other comprehensive income, net of tax	29,010						29,009	1
Exercise of stock options, net of tax withholding forfeitures	(38)			(54)		$ 16
Exercise of stock options, net of tax withholding forfeitures (in shares)						1
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	(1,902)			(2,570)		$ 668
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)						58
Share-based compensation	2,216			2,216
Preferred stock dividends	(8,733)				(8,733)
Common stock dividends ($0.05 per share)	(1,990)				(1,990)
Ending balance (in shares) at Mar. 31, 2019		(52)	(50,335)			(10,880)
Ending balance at Mar. 31, 2019	$ 1,431,329	$ 1	$ 503	$ 1,138,987	$ 936,479	$ (599,161)	$ (45,898)	$ 418