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Stock-Based Compensation (Tables)
 3 Months Ended
Mar. 31, 2021
Share-based Payment Arrangement [Abstract]  
Summary of ESPP Share Activity
The following is a summary of 2019 ESPP share activity for the three months ended March 31, 2021:
Shares
Available for future purchases, January 1, 2021369,771 
Additional shares reserved under 2019 ESPP86,490 
Purchases(31,824)
Available for future purchases, March 31, 2021424,437