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Common Stock (Tables)
3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement [Abstract]  
Schedule of restricted stock unit activity
The summary of restricted stock unit ("RSU") activity is as follows (in thousands, except per share data):
Number of
Shares
Weighted-
Average
Grant Date
Fair Value
Aggregate
Intrinsic
Value
Nonvested units as of December 31, 202117,116 $45.75 $730,528 
Granted15,099 38.10 
Vested(3,602)50.39 
Canceled(1,007)44.26 
Nonvested units as of March 31, 202227,606 $40.99 $1,058,641