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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details) |  |  |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 31, 2018 Clinic | Apr. 30, 2018 Business | Feb. 28, 2018 Clinic | Sep. 30, 2018 USD ($) Clinic State Region | Sep. 30, 2018 USD ($) Clinic State Facility | Dec. 31, 2017 USD ($) Clinic | Jun. 30, 2018 USD ($) | Mar. 23, 2017
Basis of Presentation [Abstract] |  |  |  |  |  |  |  |
Percentage of general partnership interest owned |  |  |  |  | 1.00% |  |  |
Number of clinic practices acquired | Clinic | 4 |  | 2 |  | 2 | 2 |  |
Number of clinics consolidated with an existing clinic | Clinic |  |  |  |  |  | 1 |  |
Number of clinics that operate as a satellite clinic with existing partnerships | Clinic |  |  |  |  |  | 1 |  |
Number of clinics operated | Clinic |  |  |  | 588 | 588 |  |  |
Number of states where clinics are operated | State |  |  |  | 42 | 42 |  |  |
Number of third party facilities | Facility |  |  |  |  | 26 |  |  |
Mandatorily redeemable non-controlling interests | $ |  |  |  | $ 0 | $ 0 | $ 327,000 | $ 327,000 |
Number of regions | Region |  |  |  | 6 |  |  |  |
Corporate income tax rate |  |  |  |  | 21.00% |  |  |
Unrecognized tax benefit | $ |  |  |  |  | $ 0 |  |  |
Accrued interest and penalties associated with any unrecognized tax benefits | $ |  |  |  | $ 0 | 0 |  |  |
Interest expense recognized | $ |  |  |  |  | $ 0 |  |  |
March 2017 Acquisition [Member] |  |  |  |  |  |  |  |
Basis of Presentation [Abstract] |  |  |  |  |  |  |  |
Percentage of interest acquired |  |  |  | 55.00% | 55.00% |  |  |
Industrial Injury Prevention [Member] |  |  |  |  |  |  |  |
Basis of Presentation [Abstract] |  |  |  |  |  |  |  |
Percentage of interest acquired |  | 65.00% |  |  |  |  |  | 55.00%
Number of businesses merged | Business |  | 2 |  |  |  |  |  |
Percentage of combined business interest owned |  | 59.45% |  |  |  |  |  |
Employee [Member] |  |  |  |  |  |  |  |
Deferred Compensation Arrangements [Abstract] |  |  |  |  |  |  |  |
Period in which restrictions lapse on stock granted |  |  |  |  | 4 years |  |  |
Director [Member] |  |  |  |  |  |  |  |
Deferred Compensation Arrangements [Abstract] |  |  |  |  |  |  |  |
Period in which restrictions lapse on stock granted |  |  |  |  | 1 year |  |  |
Officer [Member] |  |  |  |  |  |  |  |
Deferred Compensation Arrangements [Abstract] |  |  |  |  |  |  |  |
Period in which restrictions lapse on stock granted |  |  |  |  | 4 years |  |  |
Minimum [Member] |  |  |  |  |  |  |  |
Basis of Presentation [Abstract] |  |  |  |  |  |  |  |
Percentage of limited partnership interest owned |  |  |  |  | 49.00% |  |  |
Redeemable non-controlling interest, redemption rights, commencement period |  |  |  |  | 3 years |  |  |
Minimum [Member] | Furniture & Equipment [Member] |  |  |  |  |  |  |  |
Basis of Presentation [Abstract] |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  | 3 years |  |  |
Minimum [Member] | Software [Member] |  |  |  |  |  |  |  |
Basis of Presentation [Abstract] |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  | 3 years |  |  |
Minimum [Member] | Leasehold Improvements [Member] |  |  |  |  |  |  |  |
Basis of Presentation [Abstract] |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  | 3 years |  |  |
Maximum [Member] |  |  |  |  |  |  |  |
Basis of Presentation [Abstract] |  |  |  |  |  |  |  |
Percentage of limited partnership interest owned |  |  |  |  | 99.00% |  |  |
Redeemable non-controlling interest, redemption rights, commencement period |  |  |  |  | 5 years |  |  |
Maximum [Member] | Furniture & Equipment [Member] |  |  |  |  |  |  |  |
Basis of Presentation [Abstract] |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  | 8 years |  |  |
Maximum [Member] | Software [Member] |  |  |  |  |  |  |  |
Basis of Presentation [Abstract] |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  | 7 years |  |  |
Maximum [Member] | Leasehold Improvements [Member] |  |  |  |  |  |  |  |
Basis of Presentation [Abstract] |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  | 5 years |  |  |

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