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Stock-based Awards (Details - Options) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Weighted-Average Remaining Contractual Life      
Stock-based compensation expense $ 4,708 $ 3,498  
Options      
Number of Options      
Outstanding at the beginning of period (in shares) 5,114,490    
Granted (in shares) 0    
Exercised (in shares) (23,989)    
Canceled/forfeited (in shares) (540,987)    
Outstanding at the end of the period (in shares) 4,549,514   5,114,490
Weighted-Average Exercise Price      
Outstanding at the beginning of period (in dollars per share) $ 9.50    
Granted (in dollars per share) 0    
Exercised (in dollars per share) 2.68    
Canceled/forfeited (in dollars per share) 8.97    
Outstanding at the end of the period (in dollars per share) $ 9.60   $ 9.50
Weighted-Average Remaining Contractual Life      
Weighted average remaining contractual life (in years) 4 years 6 months   4 years 8 months 12 days
Remaining stock-based compensation expense for unvested awards $ 1,300    
Weighted average period over which remaining stock based compensation expense for unvested awards is expected to be recognized (in years) 1 year 10 months 24 days    
Stock-based compensation expense $ 300 $ 400