Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Feb. 28, 2022
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents maturity description		90
Asset Impairment Charges	$ 20,000	$ 20,000	$ 0	$ 0
Additional amounts to be paid in cash or common stock based on achievement of performance measures within period, maximum years		5 years
Goodwill, Impairment Loss		$ 148,312	$ 0	$ 0
GAAP Senior Notes [Member] | Six Point Two Five Percentage Senior Notes Due Two Thousand Twenty Seven [Member]
Summary Of Significant Accounting Policies [Line Items]
Debt instrument, interest rate, effective percentage					6.25%
Unnamed Corporate Joint Venture One [Member]
Summary Of Significant Accounting Policies [Line Items]
Equity method ownership percentage in joint venture	37.50%	37.50%
Unnamed Corporate Joint Venture Two [Member]
Summary Of Significant Accounting Policies [Line Items]
Equity method ownership percentage in joint venture	51.00%	51.00%
Buildings [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful lives, years	30 years	30 years
United States [Member] | Credit Concentration Risk [Member] | Accounts Receivable [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of net accounts receivable		20.00%	21.00%
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Short-Term investments maturity period, in years		1 year
Intangible assets finite lives	20 years	20 years
Maximum [Member] | Medical Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful lives, years	7 years	7 years
Maximum [Member] | Computer Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful lives, years	7 years	7 years
Maximum [Member] | Software and Software Development Costs [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful lives, years	7 years	7 years
Maximum [Member] | Furniture [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful lives, years	7 years	7 years
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangible assets finite lives	1 year	1 year
Minimum [Member] | Medical Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful lives, years	3 years	3 years
Minimum [Member] | Computer Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful lives, years	3 years	3 years
Minimum [Member] | Software and Software Development Costs [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful lives, years	3 years	3 years
Minimum [Member] | Furniture [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful lives, years	3 years	3 years