CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Accumulated Other Comprehensive Loss	Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares outstanding (in shares)		176,505
Beginning balance (in shares) at Dec. 31, 2019		176,505
Beginning balance at Dec. 31, 2019	$ 1,405,391	$ 17	$ 3,271,097	$ (1,005)	$ (1,864,718)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under equity compensation plans (in shares)		3,586
Shares issued under equity compensation plans	23,373	$ 1	23,372
Stock-based compensation	94,261		94,261
Comprehensive loss	(445,730)			(1,290)	(444,440)
Ending balance (in shares) at Dec. 31, 2020		180,091
Ending balance at Dec. 31, 2020	1,077,295	$ 18	3,388,730	(2,295)	(2,309,158)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares outstanding (in shares)		180,091
Shares issued under equity compensation plans (in shares)		5,377
Shares issued under equity compensation plans	33,238	$ 1	33,237
Stock-based compensation	94,674		94,674
Comprehensive loss	$ (525,699)			(1,862)	(523,837)
Ending balance (in shares) at Dec. 31, 2021	185,468	185,468
Ending balance at Dec. 31, 2021	$ 679,508	$ 19	3,516,641	(4,157)	(2,832,995)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares outstanding (in shares)	185,468	185,468
Shares issued under equity compensation plans (in shares)		3,092
Shares issued under equity compensation plans	$ 758	$ 0	758
Stock-based compensation	57,320		57,320
Comprehensive loss	$ (370,948)			(2,750)	(368,198)
Ending balance (in shares) at Dec. 31, 2022	188,560	188,560
Ending balance at Dec. 31, 2022	$ 366,638	$ 19	$ 3,574,719	$ (6,907)	$ (3,201,193)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares outstanding (in shares)	188,560	188,560