Consolidated Stockholders' Equity Statements - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Mandatory Convertible Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	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)	160,711					160,894				(183)
Other comprehensive income (loss), net of tax	23,112								23,119	(7)
Exercise of stock options, net of tax withholding forfeitures	(765)				(883)			$ 118
Exercise of stock options, net of tax withholding forfeitures (in shares)								20
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	(1,329)				(2,051)			$ 722
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)								51
Share repurchase program	(175,000)							$ (175,000)
Share repurchase program (in shares)								(2,694)
Share-based compensation	18,497				18,497
Redemption of stockholders' rights agreement	(411)					(411)
Preferred stock dividends	(34,931)					(34,931)
Preferred stock dividends	(8,121)					(8,121)
Ending balance (in shares) at Dec. 31, 2018			52	50,335				10,939
Ending balance at Dec. 31, 2018	1,387,588	$ (29,041)	$ 1	$ 503	1,139,395	922,000	$ (29,041)	$ (599,845)	(74,907)	441
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(376,776)					(377,015)				239
Other comprehensive income (loss), net of tax	11,953								11,489	464
Acquisition of business with noncontrolling interests	5,195									5,195
Acquisition of noncontrolling interests	(765)				(398)					(367)
Exercise of stock options, net of tax withholding forfeitures	(111)				(291)			$ 180
Exercise of stock options, net of tax withholding forfeitures (in shares)								4
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	(2,035)				(3,714)			$ 1,679
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)								91
Share repurchase program	$ (50,000)							$ (50,000)
Share repurchase program (in shares)	(900)							(890)
Share-based compensation	$ 17,751				17,751
Redemption of stockholders' rights agreement	0
Preferred stock conversion (in shares)			(52)					6,857
Preferred stock conversion	0		$ (1)		(340,788)			$ 340,789
Preferred stock dividends	(18,437)					(18,437)
Preferred stock dividends	(8,544)					(8,544)
Ending balance (in shares) at Dec. 31, 2019			0	50,335				4,877
Ending balance at Dec. 31, 2019	965,819	$ (2,916)	$ 0	$ 503	811,955	518,004	$ (2,916)	$ (307,197)	(63,418)	5,972
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(55,058)					(55,162)				104
Other comprehensive income (loss), net of tax	(128,039)								(128,433)	394
Retirement Savings Plan stock contributions	2,654				(1,622)			$ 4,276
Retirement Savings Plan stock contributions (in shares)								76
Exercise of stock options, net of tax withholding forfeitures	(181)				(791)			$ 610
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	(1,208)				(5,967)			$ 4,759
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)								78
Share repurchase program	$ (35,000)							$ (35,000)
Share repurchase program (in shares)	(1,000)							(976)
Share-based compensation	$ 20,030				20,030
Redemption of stockholders' rights agreement	0
Preferred stock dividends	(9,050)					(9,050)
Ending balance (in shares) at Dec. 31, 2020				50,335				5,692
Ending balance at Dec. 31, 2020	$ 757,051			$ 503	$ 823,605	$ 450,876		$ (332,552)	$ (191,851)	$ 6,470