Condensed Statements of Stockholders' Equity - USD ($) $ in Thousands	ATM Offering Common stock	ATM Offering Additional paid-in capital	ATM Offering	Common stock	Additional paid-in capital	Accumulated deficit	Total
Stockholders' (deficit) equity beginning balance at Dec. 31, 2020				$ 633	$ 358,277	$ (213,001)	$ 145,909
Stockholders' (deficit) equity shares beginning balance at Dec. 31, 2020				63,257,000
Stockholders' (Deficit) Equity Rollforward
Issuance of common stock upon vesting of restricted stock				$ 11	(11)
Issuance of common stock upon vesting of restricted stock (in shares)				1,089,000
Repurchase of shares for tax withholdings				$ (3)	(909)		(912)
Repurchase of shares for tax withholdings (in shares)				(347,000)
Stock-based compensation					7,395		7,395
Issuance of warrants in connection with term loan financing					255		255
Issuance of common stock	$ 36	$ 14,502	$ 14,538
Issuance of common stock (in shares)	3,630,000		3,629,458
Issuance of common stock upon exercise of stock options					133		133
Issuance of common stock upon exercise of stock options (in shares)				87,000
Net loss						(55,276)	(55,276)
Stockholders' (deficit) equity ending balance at Sep. 30, 2021				$ 677	379,642	(268,277)	112,042
Stockholders' (deficit) equity shares ending balance at Sep. 30, 2021				67,716,000
Stockholders' (deficit) equity beginning balance at Jun. 30, 2021				$ 677	377,125	(247,046)	130,756
Stockholders' (deficit) equity shares beginning balance at Jun. 30, 2021				67,716,000
Stockholders' (Deficit) Equity Rollforward
Stock-based compensation					2,262		2,262
Issuance of warrants in connection with term loan financing					255		255
Net loss						(21,231)	(21,231)
Stockholders' (deficit) equity ending balance at Sep. 30, 2021				$ 677	379,642	(268,277)	112,042
Stockholders' (deficit) equity shares ending balance at Sep. 30, 2021				67,716,000
Stockholders' (deficit) equity beginning balance at Dec. 31, 2021				$ 677	381,966	(287,887)	$ 94,756
Stockholders' (deficit) equity shares beginning balance at Dec. 31, 2021				67,716,000			67,716,000
Stockholders' (Deficit) Equity Rollforward
Stock-based compensation					6,627		$ 6,627
Issuance of warrants in connection with term loan financing					206		206
Net loss						(52,797)	(52,797)
Stockholders' (deficit) equity ending balance at Sep. 30, 2022				$ 677	388,799	(340,684)	$ 48,792
Stockholders' (deficit) equity shares ending balance at Sep. 30, 2022				67,716,000			67,716,000
Stockholders' (deficit) equity beginning balance at Jun. 30, 2022				$ 677	386,803	(325,381)	$ 62,099
Stockholders' (deficit) equity shares beginning balance at Jun. 30, 2022				67,716,000
Stockholders' (Deficit) Equity Rollforward
Stock-based compensation					1,996		1,996
Net loss						(15,303)	(15,303)
Stockholders' (deficit) equity ending balance at Sep. 30, 2022				$ 677	$ 388,799	$ (340,684)	$ 48,792
Stockholders' (deficit) equity shares ending balance at Sep. 30, 2022				67,716,000			67,716,000