Stock Compensation Plans and Share-Based Compensation Awards - RSUs (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Stock Compensation Plans and Share-Based Compensation Awards
Share-based compensation expense	$ 7,237	$ 9,172	$ 21,947	$ 21,459
Service-Based Restricted Stock Units
Stock Compensation Plans and Share-Based Compensation Awards
Share-based compensation expense	4,400	4,700	12,700	10,400
Unrecognized compensation expense	$ 31,600	$ 25,700	$ 31,600	$ 25,700
Weighted average period outstanding for unvested RSUs			2 years	2 years 3 months 18 days
Fair value of share based awards vested			$ 12,800	$ 9,600
Number outstanding
Balance at beginning of period (in shares)			1,339
Granted (in shares)			989
Vested (in shares)			(567)
Forfeited (in shares)			(65)
Balance at end of period (in shares)	1,696		1,696
Weighted average grant date fair value
Balance at beginning of period (in dollars per share)			$ 24.35
Granted (in dollars per share)			23.74
Vested (in dollars per share)			22.56
Forfeited (in dollars per share)			24.32
Balance at end of period (in dollars per share)	$ 24.58		$ 24.58
Service-Based Restricted Stock Units | Executive Officers
Stock Compensation Plans and Share-Based Compensation Awards
Vesting period			3 years
Service-Based Restricted Stock Units | Maximum
Stock Compensation Plans and Share-Based Compensation Awards
Vesting period			4 years
Service-Based Restricted Stock Units | Minimum
Stock Compensation Plans and Share-Based Compensation Awards
Vesting period			3 years