Stock-Based Compensation Plans - Summary of Stock Option Activity (Details)	3 Months Ended
	Mar. 31, 2021 USD ($) $ / shares shares
Number of Shares
Outstanding, beginning balance (in shares) | shares	2,186,511
Exercised (in shares) | shares	(144,285)
Outstanding, ending balance (in shares) | shares	2,042,226
Exercisable, ending balance (in shares) | shares	2,042,226
Weighted Average Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 17.87
Exercised (in dollars per share) | $ / shares	19.40
Ending balance (in dollars per share) | $ / shares	17.77
Weighted average exercise price, exercisable, ending balance (in dollars per share) | $ / shares	$ 17.77
Weighted Average Remaining Contractual Term (Years)
Weighted average remaining contractual term, outstanding, end of period (in years)	3 years 11 months 4 days
Weighted average remaining contractual term, exercisable, end of period (in years)	3 years 11 months 4 days
Aggregate Intrinsic Value of In-the-Money Options
Aggregate intrinsic value of in-the-money options, outstanding, end of period | $	$ 41,422,807
Aggregate intrinsic value of in-the-money options, exercisable, end of period | $	$ 41,422,807