Discontinued Operations - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Oct. 31, 2020	Aug. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Description of divest operations			During 2020, the Company implemented a plan to divest its California operations, which included the entirety of its Medicaid line of business, via three separate transactions with different parties.
Impairment Charge in Discontinued Operations					$ 98,300
Additional Amortization					21,400
Indemnification asset released			$ 1,700	$ 2,800	19,200
Unrecognized income tax benefits			5,919	8,914	10,839	$ 23,219
Unrecognized tax benefits, income tax penalties and interest accrued			2,100	10,000	12,800
Unrecognized tax benefit reversed			5,600	2,900	12,600
Unrecognized tax benefit accrued penalty			1,100	600	2,500
Unrecognized tax benefit accrued interest			1,100	600	1,000
unrecognized tax benefit from discontinued operations			1,800	4,100	16,200
Unrecognized Tax Position for Additional Accruals				600
Unrecognized Tax Position for Additional Interest				600
Unrecognized Tax Position for Additional Penalties				100
Uncertain Tax Position of Tax Benefit				2,800
Discontinued Operations
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Unrecognized tax benefits, income tax penalties and interest accrued			$ 2,100	10,000	$ 12,800
Fresno, California Operations
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gross sale price from disposal of operations	$ 26,000
Gain recognized from disposal of operations	$ 19,100
California Operations
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gross sale price from disposal of operations				1,000
Severance Costs				$ 3,700
Southern California Operations
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gross sale price from disposal of operations		$ 2,500
Gain recognized from disposal of operations		$ 1,300