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Stock-Based Compensation - Schedule of Restricted Stock Unit Activity (Details) - Restricted stock units - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Number of Shares      
Non-vested outstanding, beginning balance (in shares) 1,175,049 731,975 0
Granted (in shares) 436,912 622,166 738,055
Vesting of restricted stock units (in shares) (521,460) (143,390) (4,930)
Canceled (in shares) (67,666) (35,702) (1,150)
Non-vested outstanding, ending balance (in shares) 1,022,835 1,175,049 731,975
Weighted Average Grant Date Fair Value      
Non-vested outstanding, beginning balance (in usd per share) $ 26.04 $ 22.16 $ 0
Granted (in usd per share) 40.70 29.60 22.15
Vested (in usd per share) 27.81 22.19 20.24
Canceled (in usd per share) 26.38 23.97 21.40
Non-vested outstanding, ending balance (in usd per share) $ 31.39 $ 26.04 $ 22.16