XML 64 R54.htm IDEA: XBRL DOCUMENT v3.23.1
Stockholders' Equity - Employee Stock Purchase Plan (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Apr. 27, 2016
Stockholders' Equity      
Stock-based compensation expense $ 2,023 $ 2,228  
2016 Plan      
Stockholders' Equity      
Shares reserved 5,614,397    
Employee Stock Purchase Plan      
Stockholders' Equity      
Purchase price of common stock under plan (as a percent) 85.00%    
Offering period (in months) 6 months    
Shares reserved 1,559,151   1,600,000
Incremental share increase (as a percent) 1.00%    
Incremental share increase (in shares) 500,000    
Stock-based compensation expense $ 200 $ 200