CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning Balance at Dec. 31, 2020	$ 109,880	$ 2	$ 173,274	$ (63,396)
Beginning Balance, Shares at Dec. 31, 2020		17,150
Stock-based compensation expense	7,366		7,366
Net income (loss)	(3,565)			(3,565)
Issuance of common stock upon follow-on public offering net of underwriting discounts and commissions and other offering costs	181,588		181,588
Issuance of common stock upon follow-on public offering net of underwriting discounts and commissions and other offerings costs, Shares		1,500
Issuance of shares upon vesting of restricted stock units, net of tax withholdings, Shares		190
Ending Balance at Mar. 31, 2021	295,269	$ 2	362,228	(66,961)
Ending Balance, Shares at Mar. 31, 2021		18,840
Beginning Balance at Dec. 31, 2021	$ 632,497	$ 2	663,614	(31,119)
Beginning Balance, Shares at Dec. 31, 2021	20,825	20,825
Stock-based compensation expense	$ 15,237		15,237
Net income (loss)	6,140			6,140
Issuance of shares upon vesting of restricted stock units, net of tax withholdings, Shares		217
Ending Balance at Mar. 31, 2022	$ 653,874	$ 2	$ 678,851	$ (24,979)
Ending Balance, Shares at Mar. 31, 2022	21,042	21,042