XML 46 R36.htm IDEA: XBRL DOCUMENT v3.23.3
Stockholders' Equity - Company's Stock Option Activity (Details) - 2013 Equity Incentive Plan - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
OUTSTANDING OPTIONS      
Outstanding at beginning of period 6,774,792    
Options granted 2,451,050    
Options exercised (100,060) 0  
Options forfeited (896,882)    
Outstanding at end of period 8,228,900   6,774,792
WEIGHTED-AVERAGE EXERCISE PRICE      
Outstanding at beginning of period $ 6.37    
Options granted 2.55    
Options exercised 1.15    
Options forfeited 6.16    
Outstanding at end of period $ 5.32   $ 6.37
VESTED AND EXPECTED TO VEST      
Outstanding options 8,087,000    
Weighted-Average Exercise Price $ 5.39    
Weighted-Average Remaining Contractual Term 6 years 4 months 24 days    
Aggregate Intrinsic Value (in thousands) $ 599    
ADDITIONAL DISCLOSURES      
Outstanding options exercisable at end of period 4,849,652    
Weighted-average exercise price exercisable at end of period $ 7.43    
Weighted-average contractual term outstanding 6 years 4 months 24 days   6 years 1 month 6 days
Weighted-average contractual term (years) exercisable 4 years 7 months 6 days    
Aggregate intrinsic value (in thousands) outstanding at end of period $ 655    
Aggregate intrinsic value (in thousands) exercisable at end of period $ 307