Discontinued Operations - Summary of Major Classes of Assets and Liabilities as Reported on Consolidated Balance Sheets (Parenthetical) (Detail) - Hospital And Large Physician Practices [Member] - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Disposal group including discontinued operation accounts receivable, allowance	$ 18,045	$ 16,584
Disposal group including discontinued operation contract asset, allowance current	492	492
Disposal group including discontinued operation contract asset - long term, allowance	$ 739	$ 739