U.K. Sale - Result of Operation (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations	$ (12,641)	$ (812,390)
Discontinued Operations [Member] \| U.K. Sales [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	62,520	1,119,768
Salaries, wages and benefits	35,937	632,134
Professional fees	6,815	127,291
Supplies	2,217	38,285
Rents and leases	2,509	47,748
Other operating expenses	6,682	113,534
Depreciation and amortization		74,935
Interest expense, net	10	(417)
Loss on sale	13,490	867,324
Loss on impairment		20,239
Transaction-related expenses	6,265	8,719
Total expenses	73,925	1,929,792
Loss from discontinued operations before income taxes	(11,405)	(810,024)
Provision for income taxes	1,236	2,366
Loss from discontinued operations	$ (12,641)	$ (812,390)

Disposal group including discontinued operation impairment loss.

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Disposal group including discontinued operation interest expense net.

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Disposal group including discontinued operation professional fees.

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Disposal group including discontinued operation rents and leases.

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Disposal group including discontinued operation salaries wages and benefits.

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Disposal group including discontinued operation supplies.

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Disposal group including discontinued operation transaction-related expenses.

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Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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Amount of other expense attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation.

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Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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