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Acquisitions of Non-controlling Interests - Additional Information (Detail) (USD $) | 9 Months Ended |  |  |
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Sep. 30, 2013 Partnership Transactions | Sep. 16, 2013 | Feb. 28, 2013 | May 22, 2012
Business Acquisition [Line Items] |  |  |  |
Number of separate transactions to purchase partnership interest | 7 |  |  |
Number of partnership in which interest acquired | 5 |  |  |
Purchase price for additional non controlling interest | $ 1,700,000 |  |  |
Undistributed earnings | 142,000 |  |  |
Consolidation less than wholly owned subsidiary parent ownership interest amount changes purchase consideration charge from undistributed earning | 1,600,000 |  |  |
Future tax benefits | 600,000 |  |  |
Consolidation less than wholly owned subsidiary parent ownership interest changes sale of interest percent by parent | 1.00% |  |  |
Proceeds from divestiture of interest in consolidated subsidiaries | 112,000 |  |  |
Percentage of purchase of non controlling interest | 100.00% | 100.00% | 100.00% | 70.00%
Income tax effects on sale of interest in partnership | 34,000 |  |  |
Business acquisition, cost of acquired entity | 130,000 | 95,000 | 5,000 |
STAR Physical Therapy, LP [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Undistributed earnings | 55,000 |  |  |
Percentage of purchase of non controlling interest | 1.30% |  |  |
Business acquisition, cost of acquired entity | $ 801,640 |  |  |
Minimum [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Percentage of purchase of non controlling interest | 0.10% |  |  |
Maximum [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Percentage of purchase of non controlling interest | 35.00% |  |  |

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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 Represents the purchase by the parent of an additional equity interest in a subsidiary during the period, thereby effecting a change in total (consolidated) equity attributable to the parent. The purchase of the additional equity interest represented by this element increases the parent's controlling interest in the subsidiary. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4M -URI http://asc.fasb.org/extlink&oid=31814832&loc=SL4591554-111686 + Details
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- Definition The tax effect of an increase or decrease in contributed capital (for example, deductible expenditures reported as a reduction of the proceeds from issuing capital stock) during the period charged or credited directly to shareholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 11 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=18498875&loc=d3e39076-109324 + Details
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