CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Shares	Capital in Excess of Par Value	Accumulated Other Comprehensive Loss	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2020		180,091
Beginning balance at Dec. 31, 2020	$ 1,077,295	$ 18	$ 3,388,730	$ (2,295)	$ (2,309,158)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under equity compensation plans (in shares)		2,199
Shares issued under equity compensation plans	17,106		17,106
Stock-based compensation	23,898		23,898
Comprehensive income (loss)	(123,793)			(826)	(122,967)
Ending balance (in shares) at Mar. 31, 2021		182,290
Ending balance at Mar. 31, 2021	994,506	$ 18	3,429,734	(3,121)	(2,432,125)
Beginning balance (in shares) at Dec. 31, 2020		180,091
Beginning balance at Dec. 31, 2020	$ 1,077,295	$ 18	3,388,730	(2,295)	(2,309,158)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under equity compensation plans (in shares)	3,682
Comprehensive income (loss)	$ (249,591)
Ending balance (in shares) at Jun. 30, 2021		183,773
Ending balance at Jun. 30, 2021	904,975	$ 18	3,466,001	(3,400)	(2,557,644)
Beginning balance (in shares) at Mar. 31, 2021		182,290
Beginning balance at Mar. 31, 2021	$ 994,506	$ 18	3,429,734	(3,121)	(2,432,125)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under equity compensation plans (in shares)	1,483	1,483
Shares issued under equity compensation plans	$ 12,553		12,553
Stock-based compensation	23,714		23,714
Comprehensive income (loss)	(125,798)			(279)	(125,519)
Ending balance (in shares) at Jun. 30, 2021		183,773
Ending balance at Jun. 30, 2021	904,975	$ 18	3,466,001	(3,400)	(2,557,644)
Beginning balance (in shares) at Dec. 31, 2021		185,468
Beginning balance at Dec. 31, 2021	679,508	$ 19	3,516,641	(4,157)	(2,832,995)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under equity compensation plans (in shares)		806
Shares issued under equity compensation plans	188		188
Stock-based compensation	20,961		20,961
Comprehensive income (loss)	(92,768)			(2,375)	(90,393)
Ending balance (in shares) at Mar. 31, 2022		186,274
Ending balance at Mar. 31, 2022	607,889	$ 19	3,537,790	(6,532)	(2,923,388)
Beginning balance (in shares) at Dec. 31, 2021		185,468
Beginning balance at Dec. 31, 2021	$ 679,508	$ 19	3,516,641	(4,157)	(2,832,995)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under equity compensation plans (in shares)	1,937
Comprehensive income (loss)	$ (253,495)
Ending balance (in shares) at Jun. 30, 2022		187,405
Ending balance at Jun. 30, 2022	458,732	$ 19	3,549,360	(8,191)	(3,082,456)
Beginning balance (in shares) at Mar. 31, 2022		186,274
Beginning balance at Mar. 31, 2022	$ 607,889	$ 19	3,537,790	(6,532)	(2,923,388)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under equity compensation plans (in shares)	1,131	1,131
Shares issued under equity compensation plans	$ 467		467
Stock-based compensation	11,103		11,103
Comprehensive income (loss)	(160,727)			(1,659)	(159,068)
Ending balance (in shares) at Jun. 30, 2022		187,405
Ending balance at Jun. 30, 2022	$ 458,732	$ 19	$ 3,549,360	$ (8,191)	$ (3,082,456)