Stock Compensation Plans - Options (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Options Outstanding Activity
Options outstanding, beginning of period (in shares)	6,438,801
Options granted (in shares)	0
Options exercised (in shares)	(77,925)
Options expired (in shares)	(106,826)
Options cancelled (in shares)	(326,652)
Options outstanding, end of period (in shares)	5,927,398	6,438,801
Weighted Average Exercise Price
Options outstanding, beginning of period (in dollars per share)	$ 17.03
Options granted (in dollars per share)	0
Options exercised (in dollars per share)	12.59
Options expired (in dollars per share)	12.24
Options cancelled (in dollars per share)	16.50
Options outstanding, end of period (in dollars per share)	$ 17.20	$ 17.03
Other Options Information
Options vested and expected to vest (in shares)	5,867,477
Options exercisable (in shares)	3,370,420
Options available for grant (in shares)	21,697,291
Options vested and expected to vest, weighted average exercise price (in dollars per share)	$ 17.27
Outstanding end of period (in dollars per share)	$ 22.57
Options outstanding, weighted average remaining contractual term	5 years 3 months 18 days
Options vested and expected to vest, weighted average remaining contractual term	5 years 3 months 18 days
Options exercisable, weighted average remaining contractual term	3 years 10 months 24 days
Options exercised, aggregate intrinsic value	$ 0.4	$ 11.0	$ 0.0
Options outstanding, aggregate intrinsic value	0.0
Options vested and expected to vest, aggregate intrinsic value	0.0
Options exercisable, aggregate intrinsic value	$ 0.0