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Related-Party Transactions - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2020	Dec. 31, 2021
Related Party Transaction [Line Items]
Revenues recognized from related party			$ (92,174,000)		$ (126,432,000)
Deferred revenue	$ 59,030,000		59,030,000		55,794,000		$ 75,896,000
Payment to acquire interest in joint venture			3,920,000	$ 1,960,000
CCAW JV LLC [Member]
Related Party Transaction [Line Items]
Deferred revenue	141,000		141,000		1,320,000
Revenues recognized from related party	397,000	$ 419,000	1,179,000	1,342,000
Payment to acquire interest in joint venture						$ 2,940,000
Equity method investment, ownership percentage						50.00%
Cleveland Clinic [Member]
Related Party Transaction [Line Items]
Deferred revenue	14,000		14,000		355,000
Revenues recognized from related party	647,000	$ 310,000	1,836,000	$ 1,764,000
Related Party [Member] | CCAW JV LLC [Member]
Related Party Transaction [Line Items]
Due from related parties	0		0		1,602,000
Related Party [Member] | Cleveland Clinic [Member]
Related Party Transaction [Line Items]
Due from related parties	$ 91,000		$ 91,000		$ 995,000

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