Investments in Other Entities (Equity Method) (Detail) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Equity Method Investments	$ 34,876,980	$ 21,903,524
Universal Care Inc [Member]
Equity Method Investments	2,635,945	8,609,455
LaSalle Medical Associates IPA [Member]
Equity Method Investments	7,054,888	9,452,767
Diagnostic Medical Group [Member]
Equity Method Investments	2,257,346	1,847,411
Pacific Medical Imaging and Oncology Center, Inc [Member]
Equity Method Investments	1,359,494	1,400,693
Pacific Ambulatory Surgery Center, LLC [Member]
Equity Method Investments	285,198	593,198
Accountable Health Care IPA [Member]
Equity Method Investments	4,977,957	0
531 W. College, LLC – related party
Equity Method Investments	16,273,152	0
MWN, LLC – related party
Equity Method Investments	$ 33,000	$ 0