Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Aug. 16, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Taxes [Line Items]
Foreign pre-tax earnings		$ 76,000	$ 79,000	$ 72,000
Qualified dividend received deduction		109,000
Tax expense (benefit) from employee share-based payments		$ 1,000	$ 2,000	$ 7,000
Inflation reduction act of 2022, Percentage of minimum tax on book income	15.00%
Inflation reduction act of 2022 percentage of excise tax on net stock repurchases	1.00%
Effective tax rates		24.20%	23.60%	23.90%
Deferred federal state and foreign tax benefit		$ 17,000	$ 6,000
Future taxable income, amount		890,000
Deferred state tax benefit (net of the federal benefit)		(6,107)	(4,420)	$ (4,114)
Deferred foreign tax benefit		12,000
Deferred federal tax benefits		9,935	26,638	$ 20,382
Valuation allowances		63,325	62,356
Increase in estimated liabilities for uncertain tax positions		1,000	1,000
Impact of unrecognized tax benefits if recognized		$ 2,000	2,000
Period of expiration of the statute of limitations for certain jurisdictions		within the next twelve months
Jurisdictions statutes of limitations expiration period		12 months
Maximum
Income Taxes [Line Items]
Accrued interest and penalties		$ 1,000	1,000
Foreign and U.S. state and local jurisdictions have statutes of limitations, in years		4 years
Minimum
Income Taxes [Line Items]
Foreign and U.S. state and local jurisdictions have statutes of limitations, in years		3 years
Allowance in relation to state tax benefit
Income Taxes [Line Items]
Valuation allowances		$ 59,000	57,000
Interest Expense Carryforwards [Member]
Income Taxes [Line Items]
Increase in valuation allowance		2,000
Foreign Net Operating Losses and Credit Carryforwards
Income Taxes [Line Items]
Increase in valuation allowance		4,000	$ 5,000
State and Local Jurisdiction
Income Taxes [Line Items]
Deferred state tax benefit (net of the federal benefit)		58,000
Interest expense carryforwards		170,000
Interest expense, deferred tax benefit		8,000
Foreign Tax Authority
Income Taxes [Line Items]
Net operating losses and interest expense		49,000
Riverside Medical Clinic Patient Services, LLC
Income Taxes [Line Items]
Operating loss carry forward federal and state		10,000
Deferred federal tax benefits		$ 2,000