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Organization and Summary of Accounting Policies - Medicare Accelerated Payments and Deferred Governmental Grants (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Proceeds from grants received	$ 0.6		$ 2.0	$ 8.0
Grant funds	0.5	$ 0.0	1.8	$ 20.0
Unrecognized grant funds received	4.0		4.0		$ 4.0
Repayments of grants received	13.0		56.0
Deferred accelerated payments	$ 4.0		$ 4.0		$ 60.0