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Summary of Significant Accounting Policies - Other Current Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract] |  |
Prepaid expenses | $ 23,708 | $ 30,802
Other receivables | 16,097 | 19,205
Cost report receivable | 13,723 | 10,340
Workers’ compensation deposits – current portion | 10,000 | 10,000
Income taxes receivable | 5,579 | 2,380
Inventory | 4,759 | 5,055
Insurance receivable - current portion | 3,030 | 2,049
Other | 1,348 | 1,989
Other current assets | $ 78,244 | $ 81,820

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