Quarterly report pursuant to Section 13 or 15(d)

Description of Business - Additional Information (Detail)

v3.8.0.1
Description of Business - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Nov. 15, 2016
Mar. 31, 2018
Dec. 31, 2011
Dec. 31, 2017
Jul. 31, 2016
May 31, 2016
Jun. 04, 2014
Description Of Business [Line Items]              
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   4.90%   4.95%      
Concourse Diagnostic Surgery Center, LLC [Member]              
Description Of Business [Line Items]              
Equity Method Investment, Ownership Percentage     41.59%   43.43% 43.80%  
Payments to Acquire Equity Method Investments     $ 625,000        
Universal Care Acquisition Partners, LLC [Member]              
Description Of Business [Line Items]              
Equity Method Investment, Ownership Percentage             100.00%
Pacific Ambulatory Surgery Center [Member]              
Description Of Business [Line Items]              
Equity Method Investment, Ownership Percentage   40.00%          
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%