Shareholders' Equity - RSU Activity (Details) - Unvested restricted stock units - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Restricted stock, Shares Subject to Restriction
Outstanding at the beginning of the period (in shares)	654,470
Granted (in shares)	283,681
Vested (in shares)	(275,082)
Forfeited (in shares)	(25,660)
Outstanding at the end of the period (in shares)	637,409
Restricted stock, Weighted Average Grant Date Value
Outstanding at the beginning of the period (in dollars per share)	$ 53.44
Granted (in dollars per share)	62.93
Vested (in dollars per share)	47.61
Forfeited (in dollars per share)	57.02
Outstanding at the end of the period (in dollars per share)	$ 60.04
Additional share-based compensation disclosures
Total fair value of shares vested	$ 17.3	$ 26.6