Investments in Other Entities (Equity Method) (Detail) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Equity Method Investments	$ 21,903,524	$ 24,256,065
Universal Care Inc [Member]
Equity Method Investments	8,609,455	10,942,360
LaSalle Medical Associates IPA [Member]
Equity Method Investments	9,452,767	9,503,875
Diagnostic Medical Group [Member]
Equity Method Investments	1,847,411	1,683,698
Pacific Medical Imaging and Oncology Center, Inc [Member]
Equity Method Investments	1,400,693	1,346,428
Pacific Ambulatory Surgery Center, LLC [Member]
Equity Method Investments	$ 593,198	$ 779,704

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant