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Common Stock (Tables)
 9 Months Ended
Sep. 30, 2020
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, 201941,685 $52.06 $1,793,305 
Granted23,854 27.82 
Vested(14,086)45.02 
Cancelled(10,352)47.99 
Nonvested units as of September 30, 202041,101 $41.39 $1,132,220