Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ 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 deficit	Accumulated deficit Cumulative Effect, Period of Adoption, Adjustment	Accumulated other comprehensive income (loss)
Beginning balance (in shares) at Dec. 31, 2020			73,874,904
Beginning balance at Dec. 31, 2020	$ 320,684		$ 8	$ 897,607		$ (577,530)		$ 599
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Vesting of restricted stock (in shares)			238,962
Exercise of stock option (in shares)			5,721
Exercise of stock options	15			15
Stock-based compensation	8,708			8,708
Issuance of common stock pursuant to Employee Stock Purchase Plan (in shares)			95,004
Issuance of common stock pursuant to Employee Stock Purchase Plan	759			759
Issuance of common stock for restricted stock units vested (in shares)			278,559
Net loss	(57,641)					(57,641)
Other comprehensive loss	(441)							(441)
Ending balance (in shares) at Mar. 31, 2021			74,493,150
Ending balance at Mar. 31, 2021	272,084		$ 8	907,089		(635,171)		158
Beginning balance (in shares) at Dec. 31, 2020			73,874,904
Beginning balance at Dec. 31, 2020	320,684		$ 8	897,607		(577,530)		599
Ending balance (in shares) at Dec. 31, 2021			75,752,664
Ending balance at Dec. 31, 2021	$ 121,463	$ (44,838)	$ 8	932,944	$ (53,527)	(811,534)	$ 8,689	45
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2020-06 [Member]
Vesting of restricted stock (in shares)			165,675
Exercise of stock option (in shares)	39,525		39,525
Exercise of stock options	$ 126			126
Stock-based compensation	10,983			10,983
Issuance of common stock pursuant to Employee Stock Purchase Plan (in shares)			77,496
Issuance of common stock pursuant to Employee Stock Purchase Plan	595			595
Issuance of common stock for restricted stock units vested (in shares)			518,577
Net loss	(57,785)					(57,785)
Other comprehensive loss	(385)							(385)
Ending balance (in shares) at Mar. 31, 2022			76,553,937
Ending balance at Mar. 31, 2022	$ 30,159		$ 8	$ 891,121		$ (860,630)		$ (340)