Stock-Based Incentive Compensation Plans - Stock Option Activity Under the Stock Option Plan (Details) - $ / shares	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Number of Shares
Outstanding, beginning of period (in shares)		2,718,971
Granted (in shares)	0	26,236
Exercised (in shares)		(227,334)
Canceled and forfeited (in shares)		(13,524)
Outstanding, end of period (in shares)	2,504,349	2,504,349
Weighted-Average Exercise Price
Outstanding, beginning of period (in dollars per share)		$ 8.02
Granted (in dollars per share)		17.31
Exercised (in dollars per share)		4.34
Canceled and forfeited (in dollars per share)		17.21
Outstanding, end of period (in dollars per share)	$ 8.40	$ 8.40