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Stock-Based Compensation - Summary of Options and Awards Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Stock-based compensation    
Options and Awards Available for Grant, Outstanding, Beginning balance 179,219  
Options and Awards Available for Grant, Options authorized 570,946  
Options and Awards Available for Grant, RSUs granted (236,605)  
Options Available for Grant, RSUs cancelled/forfeited 31,626  
Options and Awards Available for Grant, Options granted (39,500)  
Options and Awards Available for Grant, Options cancelled/forfeited 134,857  
Options and Awards Available for Grant, Outstanding, Ending balance 640,543 179,219
Number of Options, Outstanding, Beginning balance 2,272,905  
Number of Options, Options granted 39,500  
Number of Options, Options exercised (54,077)  
Number of Options, Options cancelled/forfeited (136,432)  
Number of Options, Outstanding, Ending balance 2,121,896 2,272,905
Number of Options, exercisable 1,288,863  
Weighted - Average Exercise Price Per Share, Options outstanding, Beginning balance $ 5.58  
Weighted - Average Exercise Price Per Share, Options granted 5.52  
Weighted - Average Exercise Price Per Share, Options exercised 2.66  
Weighted - Average Exercise Price Per Share, Options cancelled/forfeited 3.96  
Weighted - Average Exercise Price Per Share, Options outstanding, Ending balance 5.75 $ 5.58
Weighted - Average Exercise Price Per Share, Options exercisable $ 6.81  
Weighted - Average Remaining Contractual Life, Options outstanding 6 years 1 month 6 days 7 years 10 months 24 days
Weighted - Average Remaining Contractual Life, Options exercisable 4 years 6 months  
Aggregate Intrinsic Value, Options outstanding $ 2,359 $ 1,640
Aggregate Intrinsic Value, Options exercised 194  
Aggregate Intrinsic Value, Options exercisable $ 586