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OBLIGATIONS UNDER CAPITAL LEASES (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Capital Lease Obligations [Line Items]
Capital Lease Obligations	$ 26,267,000	$ 27,981,000
Description of Lessee Leasing Arrangements, Capital Leases	are payable in 44 to 84 monthly installments, and mature between July 2019 and October 2024​​​​​​​.
Maximum [Member]
Capital Lease Obligations [Line Items]
Capital Lease Obligation Interest Rate	13.00%
Minimum [Member]
Capital Lease Obligations [Line Items]
Capital Lease Obligation Interest Rate	4.73%

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- Definition

Interest rate of capital lease obligation.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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-Section S99
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A general description of the lessee's leasing arrangements including, but not limited to, the following: a) the basis on which contingent rental payments are determined; (b) the existence and terms of renewal or purchase options and escalation clauses; (c) restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing.

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