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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details) | 1 Months Ended | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
May 31, 2017 USD ($) Clinic Installment | Mar. 31, 2017 USD ($) Clinic State Facility Region | Mar. 31, 2016 USD ($) | Dec. 31, 2016 USD ($) | Nov. 02, 2015 | Apr. 01, 2013
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Percentage of general partnership interest owned |  | 1.00% |  |  |  |
Number of clinics operated | Clinic |  | 558 |  |  |  |
Number of states where clinics are operated | State |  | 42 |  |  |  |
Number of third party facilities | Facility |  | 30 |  |  |  |
Number of regions | Region |  | 6 |  |  |  |
Federal debt ceiling in connection with deficit reductions |  | 10 years |  |  |  |
Reductions in federal spending |  | $ 1,200,000,000,000 |  |  |  |
Medicare spending cut percentage |  | 2.00% |  |  |  |
Expected reduction in Medicare spending percentage |  |  |  |  | 2.00% | 2.00%
Combined physical therapy/speech language pathology expenses |  | $ 3,700 |  |  |  |
Percentage of practice expense component |  | 100.00% |  |  |  |
Percentage reduction for service |  | 50.00% |  |  |  |
Net revenue from Medicare accounts |  | $ 22,300,000 |  |  |  |
Difference between net revenues and corresponding cash collections, approximately of net revenues |  | 1.00% |  |  |  |
Difference between actual aggregate contractual reserve and estimated contractual allowance reserve percentage |  | 1.00% |  |  |  |
Maximum contractual allowance reserve estimate |  | 1.00% |  |  |  |
Unrecognized tax benefit |  | $ 0 |  |  |  |
Accrued interest and penalties associated with any unrecognized tax benefits |  | 0 |  |  |  |
Interest expense recognized |  | 0 |  |  |  |
Increase in earnings by decreasing the tax provision due to adoption of new accounting treatment |  | 1,812,000 | $ 2,172,000 |  |  |
Seller notes issued for acquisition of interest in clinic |  | $ 900,000 |  | $ 1,000,000 |  |
Accounting Standards Update 2016-09 [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Increase in earnings by decreasing the tax provision due to adoption of new accounting treatment |  |  | $ 500,000 |  |  |
Year 2017 [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Percentage of increase in medicare payment rates |  | 0.24% |  |  |  |
Year 2018 [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Percentage of increase in medicare payment rates |  | 0.50% |  |  |  |
Year 2019 [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Percentage of increase in medicare payment rates |  | 0.50% |  |  |  |
March 2017 Acquisition [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Percentage of interest acquired |  | 55.00% |  |  |  |
Acquisition of Four Clinic Practices [Member] | Subsequent Event [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Percentage of interest acquired | 70.00% |  |  |  |  |
Number of clinics | Clinic | 4 |  |  |  |  |
Cash paid for acquisition of interest in clinic | $ 2,250,000 |  |  |  |  |
Seller notes issued for acquisition of interest in clinic | $ 250,000 |  |  |  |  |
Business acquisition number of installments to payment of purchase consideration | Installment | 2 |  |  |  |  |
Acquisition cost payable in two principal installments including accrued interest | $ 125,000 |  |  |  |  |
Minimum [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Percentage of limited partnership interest owned |  | 49.00% |  |  |  |
Mandatorily redeemable non-controlling interest, redemption rights, commencement period |  | 3 years |  |  |  |
Minimum [Member] | Furniture & Equipment [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Estimated useful lives |  | 3 years |  |  |  |
Minimum [Member] | Software [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Estimated useful lives |  | 3 years |  |  |  |
Minimum [Member] | Leasehold Improvements [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Estimated useful lives |  | 3 years |  |  |  |
Maximum [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Percentage of limited partnership interest owned |  | 99.00% |  |  |  |
Mandatorily redeemable non-controlling interest, redemption rights, commencement period |  | 5 years |  |  |  |
Maximum [Member] | Year 2017 [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Annual limit on physical therapy and speech language pathology services |  | $ 1,980 |  |  |  |
Annual limit occupational therapy services |  | $ 1,980 |  |  |  |
Maximum [Member] | Furniture & Equipment [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Estimated useful lives |  | 8 years |  |  |  |
Maximum [Member] | Software [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Estimated useful lives |  | 7 years |  |  |  |
Maximum [Member] | Leasehold Improvements [Member] |  |  |  |  |  |
Depreciation Amortization Impairment [Line Items] |  |  |  |  |  |
Estimated useful lives |  | 5 years |  |  |  |

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