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Stock-Based Compensation Plans - Summary of Nonvested RSUs (Details) - Restricted Stock Units (RSUs)
12 Months Ended
Dec. 31, 2019
$ / shares
shares
Number of Shares  
Nonvested, beginning balance (in shares) | shares 651,045
Granted (in shares) | shares 742,579
Vested (in shares) | shares (259,634)
Forfeited (in shares) | shares (124,586)
Nonvested, ending balance (in shares) | shares 1,009,404
Weighted Average Grant Date Fair Value  
Nonvested, beginning balance (in dollars per share) | $ / shares $ 23.82
Granted (in dollars per share) | $ / shares 33.28
Vested (in dollars per share) | $ / shares 24.16
Forfeited (in dollars per share) | $ / shares 29.79
Nonvested, ending balance (in dollars per share) | $ / shares $ 29.96