Stock-Based Compensation Plans - Summary of Nonvested RSUs (Details) - Restricted Share Units (RSUs)	9 Months Ended
	Sep. 30, 2021 $ / shares shares
Number of Shares
Nonvested, beginning balance (in shares) | shares	1,118,182
Granted (in shares) | shares	578,220
Vested (in shares) | shares	(522,608)
Forfeited (in shares) | shares	(232,734)
Nonvested, ending balance (in shares) | shares	941,060
Weighted Average Grant Date Fair Value
Nonvested, beginning balance (in dollars per share) | $ / shares	$ 27.34
Granted (in dollars per share) | $ / shares	39.27
Vested (in dollars per share) | $ / shares	27.69
Forfeited (in dollars per share) | $ / shares	30.54
Nonvested, ending balance (in dollars per share) | $ / shares	$ 33.69