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Organization, Nature of Operations and Basis of Presentation - Schedule of Multi Clinic Acquisition (Details) - Clinic	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Percentage of interest acquired	35.00%
Number of clinics	2
January 2017 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date	Jan. 01, 2017
Percentage of interest acquired	70.00%
Number of clinics	17
May 2017 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date	May 31, 2017
Percentage of interest acquired	70.00%
Number of clinics	4
June 2017 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date	Jun. 30, 2017
Percentage of interest acquired	60.00%
Number of clinics	9
October 2017 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date	Oct. 31, 2017
Percentage of interest acquired	70.00%
Number of clinics	9
February 2016 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date		Feb. 29, 2016
Percentage of interest acquired		55.00%
Number of clinics		8
November 2016 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date		Nov. 30, 2016
Percentage of interest acquired		60.00%
Number of clinics		12
January 2015 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date			Jan. 31, 2015
Percentage of interest acquired			60.00%
Number of clinics			9
April 2015 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date			Apr. 30, 2015
Percentage of interest acquired			70.00%
Number of clinics			3
June 2015 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date			Jun. 30, 2015
Percentage of interest acquired			70.00%
Number of clinics			4
December 2015 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date			Dec. 31, 2015
Percentage of interest acquired			59.00%
Number of clinics			4

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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