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COMMITMENTS AND CONTINGENCIES (Tables) | 12 Months Ended
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Dec. 31, 2016
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, 2016 were as follows:
Year Ending December 31: |  | $ |
2017 |  |  | 10,502 |
2018 |  |  | 8,591 |
2019 |  |  | 7,487 |
2020 |  |  | 7,112 |
2021 |  |  | 6,152 |
Thereafter |  |  | 65,875 |
​ | ​ | ​ | ​ | ​
Total |  |  | 105,719 |
​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​
Schedule of future minimum lease payments assets under capital leases | As of December 31, 2016, future minimum lease payments for assets under capital leases to be paid over the remaining terms of up to four years were as follows:
Year Ending December 31: |  | $ |
2017 |  |  | 15,497 |
2018 |  |  | 16,130 |
2019 |  |  | 9,748 |
2020 |  |  | 2,384 |
​ | ​ | ​ | ​ | ​
Total minimum lease payments |  |  | 43,759 |
Less: Amount representing interest |  |  | 3,542 |
​ | ​ | ​ | ​ | ​
Present value of net minimum lease payments |  |  | 40,217 |
Current portion |  |  | 15,497 |
​ | ​ | ​ | ​ | ​
Non-current portion |  |  | 24,720 |
Schedule of future minimum obligation, using market prices, under all supply agreements |
Year Ending December 31: |  | $ |
2017 |  |  | 562,357 |
2018 |  |  | 446,879 |
​ | ​ | ​ | ​ | ​
Total |  |  | 1,009,236 |
​ | ​ | ​ | ​ | ​

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- Definition 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. + References No definition available. + Details
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- Definition 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=6455398&loc=d3e45280-112737 + Details
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- Definition 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=6453985&loc=d3e41502-112717 + Details
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