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Description of Business - Additional Information (Detail) - USD ($)		1 Months Ended	3 Months Ended		12 Months Ended
	Jul. 01, 1999	Nov. 15, 2016	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2011	Dec. 31, 2018	Jul. 31, 2016	Jun. 04, 2014
Description Of Business [Line Items]
Proceeds from Issuance of Common Stock			$ 155,000	$ 0
Initial Fixed Term Of Amended and Restated Management and Administrative Services Agreement	30 years
ApolloMed [Member]
Description Of Business [Line Items]
Equity Method Investment, Ownership Percentage			4.89%			4.82%
Concourse Diagnostic Surgery Center, LLC [Member]
Description Of Business [Line Items]
Equity Method Investment, Ownership Percentage					41.59%		43.43%
Payments to Acquire Equity Method Investments					$ 600,000
Universal Care Acquisition Partners, LLC [Member]
Description Of Business [Line Items]
Equity Method Investment, Ownership Percentage								100.00%
International Cancer Center ICC" [Member]
Description Of Business [Line Items]
Proceeds from Issuance of Common Stock		$ 400,000
Equity Method Investment, Ownership Percentage		40.00%

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The initial fixed term of amended and restated management and administrative services agreement.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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The cash inflow from the additional capital contribution to the entity.

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