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]
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	(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, 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]
Net income (loss)	31,362
Share repurchase program	$ (100,000)
Share repurchase program (in shares)	(1,400)
Redemption of stockholders' rights agreement	$ 411
Ending balance (in shares) at Jul. 01, 2018		(52)	(50,335)			9,699
Ending balance at Jul. 01, 2018	1,351,110	$ 1	$ 503	1,129,490	814,071	$ (525,054)	(68,406)	505
Beginning balance (in shares) at Apr. 01, 2018		(52)	(50,335)			9,332
Beginning balance at Apr. 01, 2018	1,292,146	$ 1	$ 503	1,125,364	795,977	$ (500,864)	(129,434)	599
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	28,792				28,869			(77)
Other comprehensive income, net of tax	61,011						61,028	(17)
Exercise of stock options, net of tax withholding forfeitures	(44)			(64)		$ 20
Exercise of stock options, net of tax withholding forfeitures (in shares)						2
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	(32)			(552)		$ 520
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)						19
Share repurchase program	$ (24,730)					$ (24,730)
Share repurchase program (in shares)	(400)					(388)
Share-based compensation	$ 4,742			4,742
Preferred stock dividends	(8,733)				(8,733)
Common stock dividends	(2,042)				(2,042)
Ending balance (in shares) at Jul. 01, 2018		(52)	(50,335)			9,699
Ending balance at Jul. 01, 2018	1,351,110	$ 1	$ 503	1,129,490	814,071	$ (525,054)	(68,406)	505
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	(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
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)	67,468
Share repurchase program	$ (22,800)
Share repurchase program (in shares)	(400)
Redemption of stockholders' rights agreement	$ 0
Ending balance (in shares) at Jun. 30, 2019		(52)	(50,335)			11,248
Ending balance at Jun. 30, 2019	1,433,533	$ 1	$ 503	1,143,494	967,970	$ (621,167)	(62,591)	5,323
Beginning balance (in shares) at Mar. 31, 2019		(52)	(50,335)			10,880
Beginning balance at Mar. 31, 2019	1,431,329	$ 1	$ 503	1,138,987	936,479	$ (599,161)	(45,898)	418
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	42,290				42,200			90
Other comprehensive income, net of tax	(16,653)						(16,693)	40
Acquisition of business with noncontrolling interests	4,775
Exercise of stock options, net of tax withholding forfeitures	(8)			(10)		2
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	(54)			(861)		$ 807
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)						29
Share repurchase program	$ (22,815)					$ (22,815)
Share repurchase program (in shares)	(400)					(397)
Share-based compensation	$ 5,378			5,378
Preferred stock dividends	(8,733)				(8,733)
Common stock dividends	(1,976)				(1,976)
Ending balance (in shares) at Jun. 30, 2019		(52)	(50,335)			11,248
Ending balance at Jun. 30, 2019	$ 1,433,533	$ 1	$ 503	$ 1,143,494	$ 967,970	$ (621,167)	$ (62,591)	$ 5,323