Summary of Significant Accounting Policies - Narrative (Details)		3 Months Ended		12 Months Ended
	Jan. 01, 2022 USD ($)	Mar. 31, 2023 USD ($) segment	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Accounting Policies [Line Items]
Number of reporting segments (in segments) | segment		2
Amortization expense due to recognition of premium deficiency reserve		$ 0		$ 0
Decrease In accumulated deficit	$ 700,000
Accumulated deficit	$ 1,616,000,000	(2,019,039,000)		$ (1,946,433,000)	$ (1,616,015,000)
General and Administrative Expense
Accounting Policies [Line Items]
Amortization expense of deferred acquisition costs		$ 3,900,000	$ 11,800,000