Quarterly report pursuant to Section 13 or 15(d)

Investments in Other Entities (Equity Method) (Detail)

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Investments in Other Entities (Equity Method) (Detail) - USD ($)
Mar. 31, 2018
Dec. 31, 2017
Equity Method Investments $ 21,875,500 $ 21,903,524
Universal Care Inc [Member]    
Equity Method Investments 8,589,253 8,609,455
LaSalle Medical Associates - IPA Line of Business [Member]    
Equity Method Investments 9,099,975 9,452,767
Diagnostic Medical Group [Member]    
Equity Method Investments 2,176,453 1,847,411
Pacific Medical Imaging and Oncology Center, Inc [Member]    
Equity Method Investments 1,374,668 1,400,693
Pacific Ambulatory Surgery Center, LLC [Member]    
Equity Method Investments $ 635,151 $ 593,198