ACQUISITIONS OF BUSINESSES (Details)							3 Months Ended	9 Months Ended		12 Months Ended
	Jun. 30, 2017 USD ($) Clinic Installment	May 31, 2017 USD ($) Clinic Installment	Mar. 23, 2017 USD ($)	Jan. 01, 2017 USD ($) Clinic Installment	Nov. 30, 2016 USD ($) Clinic Installment	Feb. 29, 2016 USD ($) Clinic Installment	Sep. 30, 2017 USD ($) Clinic	Sep. 30, 2017 USD ($) Clinic	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($) Subsidiary
Business Acquisition [Line Items]
Number of clinic practices acquired | Clinic								2
Number of clinics consolidated with an existing clinics | Clinic							1	1
Number of clinics operates as a satellite clinic with existing partnerships | Clinic							1	1
Seller notes issued for acquisition of interest in clinic							$ 1,650,000	$ 1,650,000		$ 1,000,000
Number of subsidiaries acquired clinic practices | Subsidiary										2
Aggregate purchase price for the acquired clinic practices										$ 75,000
Cash paid, net of cash acquired								33,740,000	$ 12,958,000	23,623,000
Seller notes							1,650,000	1,650,000		1,000,000
Total consideration							35,390,000	35,390,000		24,623,000
Estimated fair value of net tangible assets acquired [Abstract]
Total current assets							5,681,000	5,681,000		1,764,000
Total non-current assets							1,790,000	1,790,000		839,000
Total liabilities							(1,844,000)	(1,844,000)		(947,000)
Net tangible assets acquired							5,627,000	5,627,000		1,656,000
Referral relationships							4,693,000	4,693,000		4,919,000
Non-compete							1,790,000	1,790,000		847,000
Tradename							5,118,000	5,118,000		3,802,000
Goodwill							40,384,000	40,384,000		32,278,000
Fair value of non-controlling interest (classified as redeemable non-controlling interests)							(11,940,000)	(11,940,000)
Fair value of non-controlling interest (classified as mandatorily redeemable non-controlling interests)							(10,282,000)	(10,282,000)		(18,879,000)
Total consideration							$ 35,390,000	$ 35,390,000		$ 24,623,000
Referral Relationships [Member] | Minimum [Member]
Business Acquisition [Line Items]
Estimated useful lives of acquired intangibles								12 years
Referral Relationships [Member] | Maximum [Member]
Business Acquisition [Line Items]
Estimated useful lives of acquired intangibles								13 years
Non-compete Agreements [Member]
Business Acquisition [Line Items]
Estimated useful lives of acquired intangibles								6 years
Acquisition of Seventeen Clinic Practices [Member]
Business Acquisition [Line Items]
Number of clinic practices acquired | Clinic				17
Percentage of interest acquired										70.00%
Cash paid for acquisition of interest in clinic				$ 10,700,000
Seller notes issued for acquisition of interest in clinic										$ 500,000
Business acquisition number of installments to payment of purchase consideration | Installment				2
Seller notes										$ 500,000
Acquisition of Seventeen Clinic Practices [Member] | January 2018 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest				$ 250,000
Acquisition of Seventeen Clinic Practices [Member] | January 2019 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest				$ 250,000
Workforce Performance Solutions [Member]
Business Acquisition [Line Items]
Percentage of interest acquired			55.00%
Cash paid for acquisition of interest in clinic			$ 6,200,000
Seller notes issued for acquisition of interest in clinic			400,000
Seller notes			$ 400,000
Acquisition Of Four Clinic Practices [Member]
Business Acquisition [Line Items]
Number of clinic practices acquired | Clinic		4
Percentage of interest acquired		70.00%
Cash paid for acquisition of interest in clinic		$ 2,300,000
Seller notes issued for acquisition of interest in clinic		$ 250,000
Business acquisition number of installments to payment of purchase consideration | Installment		2
Seller notes		$ 250,000
Acquisition Of Four Clinic Practices [Member] | May 2018 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest		125,000
Acquisition Of Four Clinic Practices [Member] | May 2019 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest		$ 125,000
Acquisition Of Nine Clinic Practices [Member]
Business Acquisition [Line Items]
Number of clinic practices acquired | Clinic	9
Percentage of interest acquired	60.00%
Cash paid for acquisition of interest in clinic	$ 15,800,000
Seller notes issued for acquisition of interest in clinic	$ 500,000
Business acquisition number of installments to payment of purchase consideration | Installment	2
Seller notes	$ 500,000
Acquisition Of Nine Clinic Practices [Member] | June 2018 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest	250,000
Acquisition Of Nine Clinic Practices [Member] | June 2019 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest	$ 250,000
Acquisition Of Twelve Clinic Practices [Member]
Business Acquisition [Line Items]
Number of clinic practices acquired | Clinic					12
Percentage of interest acquired					60.00%
Cash paid for acquisition of interest in clinic					$ 11,000,000
Seller notes issued for acquisition of interest in clinic					$ 500,000
Business acquisition number of installments to payment of purchase consideration | Installment					2
Seller notes					$ 500,000
Acquisition Of Twelve Clinic Practices [Member] | November 2017 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest					250,000
Acquisition Of Twelve Clinic Practices [Member] | November 2018 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest					$ 250,000
Acquisition Of Eight Clinic Practices [Member]
Business Acquisition [Line Items]
Number of clinic practices acquired | Clinic						8		2
Percentage of interest acquired						55.00%
Cash paid for acquisition of interest in clinic						$ 13,200,000
Seller notes issued for acquisition of interest in clinic						$ 500,000
Business acquisition number of installments to payment of purchase consideration | Installment						2
Seller notes						$ 500,000
Acquisition Of Eight Clinic Practices [Member] | February 2017 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest						250,000
Acquisition Of Eight Clinic Practices [Member] | February 2018 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest						$ 250,000
Acquisition Of Single Clinic Practice [Member]
Business Acquisition [Line Items]
Cash paid for acquisition of interest in clinic								$ 175,000