CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK, REDEEMABLE COMMON STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Redeemable Common Stock	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Increase (Decrease) in Temporary Equity [Roll Forward]
Redeemable Common Shares, Value		$ 0
Redeemable common shares, beginning balance, shares at Dec. 31, 2020		0
Convertible preferred shares, ending balance, shares at Mar. 31, 2021		229,885
Beginning balance, shares at Dec. 31, 2020			16,305,731
Beginning balance at Dec. 31, 2020	$ 72,799		$ 16	$ 267,077	$ (119)	$ (194,175)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Shares, New Issues		229,885	6,041,951
Stock Issued During Period, Value, New Issues	49,640	$ 1,875	$ 7	49,633
Stock Issued During Period Shares Warrants Exercised			1,072,887
Stock Issued During Period Value Warrants Exercised	1		$ 1
Exercise of stock options, shares			5,860
Vesting of restricted stock units, less shares withheld and retired to satisfy tax obligations	40			40
Stock-based compensation expense	1,258			1,258
Net loss	(18,676)					(18,676)
Ending balance, shares at Mar. 31, 2021			23,426,429
Ending balance at Mar. 31, 2021	105,062		$ 24	318,008	(119)	(212,851)
Increase (Decrease) in Temporary Equity [Roll Forward]
Redeemable Common Shares, Value		$ 1,875
Beginning balance, shares at Dec. 31, 2021			28,127,657
Beginning balance at Dec. 31, 2021	$ 64,412		$ 28	347,374	(119)	(282,871)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Shares, New Issues	900,000		2,512,902
Stock Issued During Period, Value, New Issues	$ 5,820		$ 3	5,817
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings			168,817
Restricted Stock, Value, Shares Issued Net of Tax Withholdings	(12)			(12)
Stock Issued During Period Shares Warrants Exercised			100
Stock-based compensation expense	1,459			1,459
Net loss	(21,965)					(21,965)
Ending balance, shares at Mar. 31, 2022			30,809,476
Ending balance at Mar. 31, 2022	$ 49,714		$ 31	$ 354,638	$ (119)	$ (304,836)