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COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2017

COMMITMENTS AND CONTINGENCIES

Schedule of future minimum lease payments under non-cancelable operating lease agreements

        Future minimum lease payments under non-cancelable operating lease agreements at December 31, 2017 were as follows:

Year Ending December 31:		$
2018			10,230
2019			8,884
2020			8,025
2021			6,889
2022			4,965
Thereafter			71,667
​	​	​	​	​
Total			110,660
​	​	​	​	​
​	​	​	​	​

Schedule of future minimum lease payments assets under capital leases

Year Ending December 31:		$
2018			59,340
2019			33,300
2020			14,231
2021 and thereafter			3,425
​	​	​	​	​
Total minimum lease payments			110,296
Less: amount representing interest			6,982
​	​	​	​	​
Present value of net minimum lease payments			103,314
Current portion			59,942
​	​	​	​	​
Non-current portion			43,372
​	​	​	​	​
​	​	​	​	​

Schedule of future minimum obligation, using market prices, under all supply agreements

Year Ending December 31:		$
2018			1,187,834
​	​	​	​	​

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Tabular disclosure of key provisions of an arrangement under which the entity has agreed to purchase goods or services over a period of time greater than one year or the normal operating cycle, if longer, including the item for which expenditures will be made, minimum quantities, milestones, time period and committed amount.

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Tabular disclosure of future minimum lease payments as of the date of the latest balance sheet presented, in aggregate and for each of the five years succeeding fiscal years, with separate deductions from the total for the amount representing executor costs, including any profit thereon, included in the minimum lease payments and for the amount of the imputed interest necessary to reduce the net minimum lease payments to present value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737

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Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717

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