Consolidated Statements of Changes in Mezzanine Equity and Stockholders’ Equity - USD ($) $ in Thousands	Total	Revision of Prior Period, Accounting Standards Update, Adjustment	Series A Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Revision of Prior Period, Accounting Standards Update, Adjustment	Accumulated Deficit	Accumulated Deficit Revision of Prior Period, Accounting Standards Update, Adjustment	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2020				103,000,594
Beginning balance at Dec. 31, 2020	$ 590,557	$ (162,478)		$ 103	$ 860,556	$ (170,240)	$ (270,313)	$ 7,762	$ 211
Increase (Decrease) in Stockholders' Equity
Common stock dividends (in shares)				91,920
Issuance of common stock pursuant to employee stock purchase program (in shares)				135,426
Issuance of common stock pursuant to employee stock purchase program	7,299				7,299
Issuance of common stock pursuant to exercise of stock options (in shares)				1,354,078
Stock issued during period, value, stock options exercised	6,896			$ 1	6,895
Issuance of common stock pursuant to settlement of restricted stock units (in shares)				1,072,378
Issuance of common stock pursuant to settlement of restricted stock units	0			$ 1	(1)
Common stock surrendered for employees' tax liability upon settlement of restricted stock units (in shares)				(319,229)
Common stock surrendered for employees' tax liability upon settlement of restricted stock units	(21,088)				(21,088)
Purchases of capped calls related to convertible senior notes	(62,647)				(62,647)
Issuance of common stock in connection with conversion of convertible senior notes (in shares)				40,768
Issuance of common stock in connection with conversion of convertible senior notes	(63)				(63)
Stock-based compensation	42,183				42,183
Other comprehensive loss	(164)								(164)
Net loss	(82,611)						(82,611)
Ending balance (in shares) at Sep. 30, 2021				105,375,935
Ending balance at Sep. 30, 2021	317,884			$ 105	662,894		(345,162)		47
Beginning balance (in shares) at Dec. 31, 2020			40,000
Beginning balance at Dec. 31, 2020			$ 39,823
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of convertible preferred stock, net			$ 34
Ending balance (in shares) at Sep. 30, 2021			40,000
Ending balance at Sep. 30, 2021			$ 39,857
Beginning balance (in shares) at Jun. 30, 2021				104,838,095
Beginning balance at Jun. 30, 2021	325,596			$ 105	651,627		(326,213)		77
Increase (Decrease) in Stockholders' Equity
Common stock dividends (in shares)				30,640
Issuance of common stock pursuant to exercise of stock options (in shares)				264,875
Stock issued during period, value, stock options exercised	1,696			$ 0	1,696
Issuance of common stock pursuant to settlement of restricted stock units (in shares)				334,283
Issuance of common stock pursuant to settlement of restricted stock units	0
Common stock surrendered for employees' tax liability upon settlement of restricted stock units (in shares)				(95,122)
Common stock surrendered for employees' tax liability upon settlement of restricted stock units	(4,558)				(4,558)
Issuance of common stock in connection with conversion of convertible senior notes (in shares)				3,164
Issuance of common stock in connection with conversion of convertible senior notes	(10)				(10)
Stock-based compensation	14,139				14,139
Other comprehensive loss	(30)								(30)
Net loss	(18,949)						(18,949)
Ending balance (in shares) at Sep. 30, 2021				105,375,935
Ending balance at Sep. 30, 2021	$ 317,884			$ 105	662,894		(345,162)		47
Beginning balance (in shares) at Jun. 30, 2021			40,000
Beginning balance at Jun. 30, 2021			$ 39,846
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of convertible preferred stock, net			$ 11
Ending balance (in shares) at Sep. 30, 2021			40,000
Ending balance at Sep. 30, 2021			$ 39,857
Beginning balance (in shares) at Dec. 31, 2021	106,308,767			106,308,767
Beginning balance at Dec. 31, 2021	$ 309,852			$ 106	682,084		(372,164)		(174)
Increase (Decrease) in Stockholders' Equity
Common stock dividends (in shares)				91,920
Issuance of common stock pursuant to employee stock purchase program (in shares)				661,054
Issuance of common stock pursuant to employee stock purchase program	$ 4,630			$ 1	4,629
Issuance of common stock pursuant to exercise of stock options (in shares)	695,705			695,705
Stock issued during period, value, stock options exercised	$ 4,972			$ 1	4,971
Issuance of common stock pursuant to settlement of restricted stock units (in shares)				1,362,071
Issuance of common stock pursuant to settlement of restricted stock units	0			$ 1	(1)
Common stock surrendered for employees' tax liability upon settlement of restricted stock units (in shares)				(402,527)
Common stock surrendered for employees' tax liability upon settlement of restricted stock units	(6,649)				(6,649)
Stock-based compensation	54,655				54,655
Other comprehensive loss	(877)								(877)
Net loss	$ (259,197)						(259,197)
Ending balance (in shares) at Sep. 30, 2022	108,716,990			108,716,990
Ending balance at Sep. 30, 2022	$ 107,386			$ 109	739,689		(631,361)		(1,051)
Beginning balance (in shares) at Dec. 31, 2021	40,000		40,000
Beginning balance at Dec. 31, 2021	$ 39,868		$ 39,868
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of convertible preferred stock, net			$ 34
Ending balance (in shares) at Sep. 30, 2022	40,000		40,000
Ending balance at Sep. 30, 2022	$ 39,902		$ 39,902
Beginning balance (in shares) at Jun. 30, 2022				108,415,939
Beginning balance at Jun. 30, 2022	181,253			$ 108	723,251		(541,116)		(990)
Increase (Decrease) in Stockholders' Equity
Common stock dividends (in shares)				30,640
Issuance of common stock pursuant to exercise of stock options (in shares)				50,585
Stock issued during period, value, stock options exercised	344			$ 0	344
Issuance of common stock pursuant to settlement of restricted stock units (in shares)				305,603
Issuance of common stock pursuant to settlement of restricted stock units	1			$ 1
Common stock surrendered for employees' tax liability upon settlement of restricted stock units (in shares)				(85,777)
Common stock surrendered for employees' tax liability upon settlement of restricted stock units	(2,906)
Stock-based compensation	19,000				19,000
Other comprehensive loss	(61)								(61)
Net loss	$ (90,245)						(90,245)
Ending balance (in shares) at Sep. 30, 2022	108,716,990			108,716,990
Ending balance at Sep. 30, 2022	$ 107,386			$ 109	$ 739,689		$ (631,361)		$ (1,051)
Beginning balance (in shares) at Jun. 30, 2022			40,000
Beginning balance at Jun. 30, 2022			$ 39,891
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of convertible preferred stock, net			$ 11
Ending balance (in shares) at Sep. 30, 2022	40,000		40,000
Ending balance at Sep. 30, 2022	$ 39,902		$ 39,902