CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Adjustment	Common Stock (Class A and B)	Additional Paid-in-Capital	Additional Paid-in-Capital Adjustment	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Accumulated Deficit Adjustment
Beginning of the period (in shares) at Dec. 31, 2020			48,789,000
Beginning of the period at Dec. 31, 2020	$ 64,277		$ 49	$ 478,698		$ 230	$ (414,700)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	48,633			48,633
Issuance of common stock upon exercise of stock options (in shares)			1,141,000
Issuance of common stock upon exercise of stock options	16,600		$ 2	16,598
Issuance of common stock under employee stock purchase plan (in shares)			149,000
Issuance of common stock under employee stock purchase plan	8,861			8,861
Issuance of restricted stock units (in shares)			1,578,000
Tax withholdings related to net share settlements of stock-based compensation awards (in shares)			(213,000)
Tax withholdings related to net share settlements of stock-based compensation awards	(27,144)			(27,144)
Net loss	(37,730)						(37,730)
Other comprehensive income (loss)	(518)					(518)
End of the period (in shares) at Dec. 31, 2021			51,444,000
End of the period at Dec. 31, 2021	$ 72,979	$ (40,299)	$ 51	525,646	$ (58,560)	(288)	(452,430)	$ 18,261
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	Accounting Standards Update 2020-06 [Member]
End of the period at Jan. 01, 2022					(58,600)			18,300
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	Accounting Standards Update 2020-06 [Member]
Beginning of the period (in shares) at Dec. 31, 2021			51,444,000
Beginning of the period at Dec. 31, 2021	$ 72,979	$ (40,299)	$ 51	525,646	$ (58,560)	(288)	(452,430)	$ 18,261
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	70,660			70,660
Issuance of common stock upon exercise of stock options (in shares)			239,000
Issuance of common stock upon exercise of stock options	3,273		$ 1	3,272
Issuance of common stock under employee stock purchase plan (in shares)			131,000
Issuance of common stock under employee stock purchase plan	9,256		$ 1	9,255
Issuance of restricted stock units (in shares)			958,000
Tax withholdings related to net share settlements of stock-based compensation awards (in shares)			(120,000)
Tax withholdings related to net share settlements of stock-based compensation awards	(12,541)			(12,541)
Net loss	(90,947)						(90,947)
Other comprehensive income (loss)	(6,398)					(6,398)
End of the period (in shares) at Dec. 31, 2022			52,652,000
End of the period at Dec. 31, 2022	5,983		$ 53	537,732		(6,686)	(525,116)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Induced conversion of convertible senior notes	(81,080)			(81,080)
Stock-based compensation expense	$ 98,765			98,765
Issuance of common stock upon exercise of stock options (in shares)	297,543		297,000
Issuance of common stock upon exercise of stock options	$ 4,472		$ 1	4,471
Issuance of common stock under employee stock purchase plan (in shares)			200,000
Issuance of common stock under employee stock purchase plan	12,513			12,513
Issuance of restricted stock units (in shares)			1,129,000
Tax withholdings related to net share settlements of stock-based compensation awards (in shares)			(99,000)
Tax withholdings related to net share settlements of stock-based compensation awards	(9,459)			(9,459)
Net loss	(127,525)						(127,525)
Other comprehensive income (loss)	6,941					6,941
End of the period (in shares) at Dec. 31, 2023			54,179,000
End of the period at Dec. 31, 2023	$ (89,390)		$ 54	$ 562,942		$ 255	$ (652,641)