CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative effect, period of adoption, adjustment	Common Stock	Additional Paid-In Capital	Additional Paid-In Capital Cumulative effect, period of adoption, adjustment	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Accumulated Deficit Cumulative effect, period of adoption, adjustment
Balances at beginning of period (in shares) at Dec. 31, 2020			117,489
Balances at beginning of period at Dec. 31, 2020	$ 431,831		$ 1,174	$ 1,344,337		$ 3,203	$ (916,883)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			820
Issuance of common stock upon exercise of stock options	18,889		$ 8	18,881
Issuance of common stock for settlement of RSUs and PRSUs (in shares)			1,833
Issuance of common stock for settlement of RSUs and PRSUs	(8,940)		$ 18	(8,958)
Issuance of common stock in connection with employee stock purchase plan (in shares)			380
Issuance of common stock in connection with employee stock purchase plan	27,655		$ 4	27,651
Share-based compensation	171,935			171,935
Other comprehensive loss	(11,636)					(11,636)
Net loss	(161,789)						(161,789)
Other	331					48	283
Balances at end of period (in shares) at Sep. 30, 2021			120,522
Balances at end of period at Sep. 30, 2021	468,276		$ 1,204	1,553,846		(8,385)	(1,078,389)
Balances at beginning of period (in shares) at Dec. 31, 2020			117,489
Balances at beginning of period at Dec. 31, 2020	$ 431,831		$ 1,174	1,344,337		3,203	(916,883)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting standards update	Accounting Standards Update 2020-06
Balances at end of period (in shares) at Dec. 31, 2021			121,598
Balances at end of period at Dec. 31, 2021	$ 489,218	$ (164,576)	$ 1,215	1,637,157	$ (245,690)	(8,911)	(1,140,243)	$ 81,114
Balances at beginning of period (in shares) at Jun. 30, 2021			119,789
Balances at beginning of period at Jun. 30, 2021	464,127		$ 1,197	1,492,117		(5,216)	(1,023,971)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			212
Issuance of common stock upon exercise of stock options	3,754		$ 2	3,752
Issuance of common stock for settlement of RSUs and PRSUs (in shares)			521
Issuance of common stock for settlement of RSUs and PRSUs	(2,637)		$ 5	(2,642)
Share-based compensation	60,619			60,619
Other comprehensive loss	(3,217)					(3,217)
Net loss	(54,417)						(54,417)
Other	47					48	(1)
Balances at end of period (in shares) at Sep. 30, 2021			120,522
Balances at end of period at Sep. 30, 2021	468,276		$ 1,204	1,553,846		(8,385)	(1,078,389)
Balances at beginning of period (in shares) at Dec. 31, 2021			121,598
Balances at beginning of period at Dec. 31, 2021	$ 489,218	$ (164,576)	$ 1,215	1,637,157	$ (245,690)	(8,911)	(1,140,243)	$ 81,114
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)	473		473
Issuance of common stock upon exercise of stock options	$ 15,505		$ 5	15,500
Issuance of common stock for settlement of RSUs and PRSUs (in shares)			1,478
Issuance of common stock for settlement of RSUs and PRSUs	(5,509)		$ 15	(5,524)
Issuance of common stock in connection with employee stock purchase plan (in shares)			344
Issuance of common stock in connection with employee stock purchase plan	29,837		$ 3	29,834
Share-based compensation	220,241			220,241
Other comprehensive loss	(16,684)					(16,684)
Net loss	(221,121)						(221,121)
Other	(48)					(48)
Balances at end of period (in shares) at Sep. 30, 2022			123,893
Balances at end of period at Sep. 30, 2022	346,863		$ 1,238	1,651,518		(25,643)	(1,280,250)
Balances at beginning of period (in shares) at Jun. 30, 2022			123,278
Balances at beginning of period at Jun. 30, 2022	326,821		$ 1,232	1,568,922		(22,176)	(1,221,157)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			95
Issuance of common stock upon exercise of stock options	3,273		$ 1	3,272
Issuance of common stock for settlement of RSUs and PRSUs (in shares)			520
Issuance of common stock for settlement of RSUs and PRSUs	(1,553)		$ 5	(1,558)
Share-based compensation	80,882			80,882
Other comprehensive loss	(3,467)					(3,467)
Net loss	(59,093)						(59,093)
Other	0					0
Balances at end of period (in shares) at Sep. 30, 2022			123,893
Balances at end of period at Sep. 30, 2022	$ 346,863		$ 1,238	$ 1,651,518		$ (25,643)	$ (1,280,250)