Consolidated Stockholders' Equity Statements - 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, 2016		52	50,335			8,155
Beginning balance at Dec. 31, 2016	$ 1,461,316	$ 1	$ 503	$ 1,116,090	$ 783,812	$ (401,026)	$ (39,067)	$ 1,004
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	92,853				93,210			(357)
Other comprehensive income (loss), net of tax	(58,975)						(58,959)	(16)
Preferred stock issuance, net	(2,838)			(2,635)		$ (203)
Preferred stock issuance, net (in shares)						55
Exercise of stock options, net of tax withholding forfeitures	(3,726)			(4,270)		$ 544
Exercise of stock options, net of tax withholding forfeitures (in shares)						97
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	(25,000)					$ (25,000)
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)						(313)
Share-based compensation	14,647			14,647
Redemption of stockholders' rights agreement	0
Preferred stock dividends	(34,931)				(34,931)
Common stock dividends ($0.20 per share)	(8,481)				(8,481)
Ending balance (in shares) at Dec. 31, 2017		52	50,335			8,316
Ending 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)
Common stock dividends ($0.20 per share)	(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	$ 1	$ 503	1,139,395	922,000	$ (599,845)	(74,907)	441
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of change in accounting principles	(29,041)				(29,041)
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)
Common stock dividends ($0.20 per share)	(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	$ 0	$ 503	$ 811,955	$ 518,004	$ (307,197)	$ (63,418)	$ 5,972