CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	At-The-Market Offering	Follow-on Public Offering	Common Stock	Common Stock At-The-Market Offering	Common Stock Follow-on Public Offering	Additional Paid-in Capital	Additional Paid-in Capital At-The-Market Offering	Additional Paid-in Capital Follow-on Public Offering	Accumulated Deficit
Beginning Balance at Dec. 31, 2020	$ 109,880			$ 2			$ 173,274			$ (63,396)
Beginning Balance, Shares at Dec. 31, 2020				17,150,000
Stock-based compensation expense	22,111						22,111
Net income	12,418									12,418
Issuance of common stock net of underwriting discounts and commissions and other offering costs			$ 181,588						$ 181,588
Issuance of common stock net of underwriting discounts and commissions and other offerings costs, Shares						1,500,000
Issuance of shares upon vesting of restricted stock units, net of tax withholdings, Shares				604,000
Ending Balance at Sep. 30, 2021	325,997			$ 2			376,973			(50,978)
Ending Balance, Shares at Sep. 30, 2021				19,254,000
Beginning Balance at Jun. 30, 2021	303,926			$ 2			368,862			(64,938)
Beginning Balance, Shares at Jun. 30, 2021				19,061,000
Stock-based compensation expense	8,111						8,111
Net income	13,960									13,960
Issuance of shares upon vesting of restricted stock units, net of tax withholdings, Shares				193,000
Ending Balance at Sep. 30, 2021	325,997			$ 2			376,973			(50,978)
Ending Balance, Shares at Sep. 30, 2021				19,254,000
Beginning Balance at Dec. 31, 2021	$ 632,497			$ 2			663,614			(31,119)
Beginning Balance, Shares at Dec. 31, 2021	20,825,000			20,825,000
Stock-based compensation expense	$ 42,051						42,051
Net income	24,782									24,782
Issuance of common stock net of underwriting discounts and commissions and other offering costs		$ 22,998						$ 22,998
Issuance of common stock net of underwriting discounts and commissions and other offerings costs, Shares					125,000
Issuance of shares upon vesting of restricted stock units, net of tax withholdings	(27,886)						(27,886)
Issuance of shares upon vesting of restricted stock units, net of tax withholdings, Shares				486,000
Ending Balance at Sep. 30, 2022	$ 694,442			$ 2			700,777			(6,337)
Ending Balance, Shares at Sep. 30, 2022	21,436,000			21,436,000
Beginning Balance at Jun. 30, 2022	$ 680,284			$ 2			692,402			(12,120)
Beginning Balance, Shares at Jun. 30, 2022				21,286,000
Stock-based compensation expense	16,400						16,400
Net income	5,783									5,783
Issuance of common stock net of underwriting discounts and commissions and other offering costs		$ 2,919						$ 2,919
Issuance of common stock net of underwriting discounts and commissions and other offerings costs, Shares					25,000
Issuance of shares upon vesting of restricted stock units, net of tax withholdings	(10,944)						(10,944)
Issuance of shares upon vesting of restricted stock units, net of tax withholdings, Shares				125,000
Ending Balance at Sep. 30, 2022	$ 694,442			$ 2			$ 700,777			$ (6,337)
Ending Balance, Shares at Sep. 30, 2022	21,436,000			21,436,000