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Stock-Based Compensation - Schedule of Restricted Stock Unit Activity (Detail) - Non-vested restricted stock units
6 Months Ended
Jun. 30, 2020
$ / shares
shares
Number of Shares  
Non-vested outstanding at January 1, 2020 (in shares) | shares 1,022,835
Granted (in shares) | shares 231,333
Vested (in shares) | shares (59,598)
Canceled (in shares) | shares (77,593)
Non-vested outstanding at March 31, 2020 (in shares) | shares 1,116,977
Weighted Average Grant Date Fair Value  
Non-vested outstanding at January 1, 2020 (in usd per share) | $ / shares $ 31.39
Fair value of shares granted (in usd per share) | $ / shares 52.46
Vested (in usd per share) | $ / shares 32.82
Canceled (in usd per share) | $ / shares 32.24
Non-vested outstanding at March 31, 2020 (in usd per share) | $ / shares $ 35.62