Employee Benefit Plans - 401(K) Saving And Retirement Plan (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Non Employee Director
Non-Employee Benefit Plan Compensation
Granted (in shares)	4,342	3,685	14,282	8,923
Compensation cost	$ 0.1	$ 0.1	$ 0.3	$ 0.3
Savings And Retirement Plan 401 K
401(K) Savings & Retirement Plan
Common stock, shares issued			310,159	54,531
Total expense (including issuance of shares)	$ 2.5	$ 1.1	$ 6.7	$ 3.4