Stock Based Compensation - RSUs (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
STOCK-BASED COMPENSATION
Stock-based compensation expense	$ 2,091	$ 1,836	$ 6,360	$ 5,734
Restricted stock units
STOCK-BASED COMPENSATION
Stock-based compensation expense	1,700	700	4,800	1,800
Unamortized stock-based compensation costs for unvested awards	$ 17,800	$ 4,500	$ 17,800	$ 4,500
Summary of restricted stock units outstanding
Outstanding at beginning of period ( in shares)			6,917,422
Awarded (in shares)			1,425,000
Released (in shares)			(1,256,626)
Forfeited (in shares)			(633,984)
Outstanding at end of period ( in shares)	6,451,812		6,451,812
Nonvested at end of period (in shares)	6,205,093		6,205,093
Weighted-Average Grant Date Fair Value
Outstanding at beginning of period (in dollars per share)			$ 2.35
Awarded (in dollars per share)			5.71
Released (in dollars per share)			1.86
Forfeited (in dollars per share)			2.92
Outstanding at end of period (in dollars per share)	$ 3.35		3.35
Nonvested at end of period (in dollars per share)	$ 3.38		$ 3.38
Weighted Average Remaining Recognition Period (in years)			2 years 7 months 6 days