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Organization, Nature of Operations and Basis of Presentation - Schedule of Multi Clinic Acquisition (Detail) | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2013 Clinic | Dec. 13, 2013 | Dec. 09, 2013 | May 22, 2012 | Jul. 31, 2011 | Jun. 30, 2011
Business Acquisition [Line Items] |  |  |  |  |  |
Percentage of interest acquired |  | 90.00% | 60.00% | 70.00% | 51.00% | 100.00%
Number of Clinics | 5 |  |  |  |  |
February 2013 Acquisition [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Acquisition date | Feb. 28, 2013 |  |  |  |  |
Percentage of interest acquired | 72.00% |  |  |  |  |
Number of Clinics | 9 |  |  |  |  |
April 2013 Acquisition [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Acquisition date | Apr. 30, 2013 |  |  |  |  |
Percentage of interest acquired | 50.00% |  |  |  |  |
Number of Clinics | 5 |  |  |  |  |
May 2013 Acquisition [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Acquisition date | May 24, 2013 |  |  |  |  |
Percentage of interest acquired | 80.00% |  |  |  |  |
Number of Clinics | 5 |  |  |  |  |
December 9, 2013 Acquisition [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Acquisition date | Dec. 09, 2013 |  |  |  |  |
Percentage of interest acquired | 60.00% |  |  |  |  |
Number of Clinics | 12 |  |  |  |  |
December 13, 2013 Acquisition [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Acquisition date | Dec. 13, 2013 |  |  |  |  |
Percentage of interest acquired | 90.00% |  |  |  |  |
Number of Clinics | 11 |  |  |  |  |
May 2012 Acquisition [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Acquisition date | May 22, 2012 |  |  |  |  |
Percentage of interest acquired | 70.00% |  |  |  |  |
Number of Clinics | 7 |  |  |  |  |
July 2011 Acquisition [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Acquisition date | Jul. 25, 2011 |  |  |  |  |
Percentage of interest acquired | 51.00% |  |  |  |  |
Number of Clinics | 20 |  |  |  |  |

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- Definition Date when the business acquisition agreement was executed, in CCYY-MM-DD format. + References No definition available. + Details
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- Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References 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=25497992&loc=d3e1392-128463 + Details
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- Definition The number of businesses acquired by the entity during the period. + References No definition available. + Details
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