Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Initial Public Offering	Follow-on Public Offering	Common Stock	Common Stock Initial Public Offering	Common Stock Follow-on Public Offering	Additional Paid-in Capital	Additional Paid-in Capital Initial Public Offering	Additional Paid-in Capital Follow-on Public Offering	Accumulated Deficit
Beginning Balance at Dec. 31, 2018	$ 11,015			$ 1			$ 58,431			$ (47,417)
Beginning Balance, Shares at Dec. 31, 2018				10,000,000
Stock-based compensation expense	1,379						1,379
Net income (loss)	(6,607)									(6,607)
Issuance of common stock net of underwriting discounts and commissions and other offering costs		$ 56,353			$ 1			$ 56,352
Issuance of common stock net of underwriting discounts and commissions and other offering costs, Shares					4,945,000
Issuance of shares upon vesting of restricted stock units, net of tax withholdings, Shares				23,000
Ending Balance at Dec. 31, 2019	62,140			$ 2			116,162			(54,024)
Ending Balance, Shares at Dec. 31, 2019				14,968,000
Stock-based compensation expense	14,816						14,816
Net income (loss)	(9,372)									(9,372)
Issuance of common stock net of underwriting discounts and commissions and other offering costs			$ 45,789						$ 45,789
Issuance of common stock net of underwriting discounts and commissions and other offering costs, Shares						1,525,000
Issuance of shares upon vesting of restricted stock units, net of tax withholdings	(3,493)						(3,493)
Issuance of shares upon vesting of restricted stock units, net of tax withholdings, Shares				657,000
Ending Balance at Dec. 31, 2020	$ 109,880			$ 2			173,274			(63,396)
Ending Balance, Shares at Dec. 31, 2020	17,150,000			17,150,000
Stock-based compensation expense	$ 29,694						29,694
Net income (loss)	32,277									32,277
Issuance of common stock net of underwriting discounts and commissions and other offering costs			$ 460,646						$ 460,646
Issuance of common stock net of underwriting discounts and commissions and other offering costs, Shares						2,800,000
Issuance of shares upon vesting of restricted stock units, net of tax withholdings, Shares				875,000
Ending Balance at Dec. 31, 2021	$ 632,497			$ 2			$ 663,614			$ (31,119)
Ending Balance, Shares at Dec. 31, 2021	20,825,000			20,825,000