ACQUISITIONS OF BUSINESSES (Details) $ in Thousands					12 Months Ended
	Aug. 31, 2018 USD ($) Clinic Installment	Apr. 30, 2018 USD ($) Business	Feb. 28, 2018 Clinic	May 31, 2017 USD ($)	Dec. 31, 2018 USD ($) Clinic
Business Combination, Description [Abstract]
Number of clinics | Clinic	4		2		5
Cash paid, net of cash acquired		$ 16,367
Seller notes		950
Total consideration		17,317
Estimated fair value of net tangible assets acquired [Abstract]
Total current assets		1,691
Total non-current assets		305
Total liabilities		(508)
Net tangible assets acquired		1,488
Referral relationships		1,879
Non-compete		386
Tradename		2,172
Goodwill		19,537
Fair value of non-controlling interest (classified as redeemable non-controlling interests)		(8,145)
Total consideration		$ 17,317
Referral Relationships [Member]
Estimated fair value of net tangible assets acquired [Abstract]
Estimated useful lives of acquired intangibles					10 years 6 months 14 days
Non-compete Agreements [Member]
Estimated fair value of net tangible assets acquired [Abstract]
Estimated useful lives of acquired intangibles					6 years
August 2018 Acquisition [Member]
Business Combination, Description [Abstract]
Percentage of interest acquired	70.00%				70.00%
Number of clinics | Clinic	4				4
Cash paid for acquisition of interest in clinic	$ 7,200
Business acquisition number of installments to payment of purchase consideration | Installment	2
Seller notes	$ 400
August 2018 Acquisition [Member] | August 2019 [Member]
Business Combination, Description [Abstract]
Acquisition cost payable in two principal installments including accrued interest	200
August 2018 Acquisition [Member] | August 2020 [Member]
Business Combination, Description [Abstract]
Acquisition cost payable in two principal installments including accrued interest	$ 200
Industrial Injury Prevention [Member]
Business Combination, Description [Abstract]
Percentage of interest acquired		65.00%		55.00%
Cash paid for acquisition of interest in clinic				$ 6,200
Number of businesses merged | Business		2
Percentage of combined business interest owned		59.45%
Seller notes				$ 400
Acquisition of Five Clinic Practices [Member]
Business Combination, Description [Abstract]
Number of clinics | Clinic					5
Cash paid for acquisition of interest in clinic					$ 1,000
Aggregate purchase price for the acquired clinic practices					850
Seller notes					$ 150
Acquisition of Five Clinic Practices [Member] | August 2019 [Member]
Business Combination, Description [Abstract]
Percentage of interest accrued					4.50%