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FAIR VALUE MEASUREMENT (Tables) | 12 Months Ended
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Dec. 31, 2014
FAIR VALUE MEASUREMENT |
Schedule of inputs into the fair value measurements of the Company's assets or liabilities that are measured at fair value on a recurring basis |
|  | Fair Value Measurements Using |
As of December 31, 2014 |  | Total Fair Value and Carrying Value on the Balance Sheets |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |
|  | $ |  | $ |  | $ |  | $ |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange forward contracts |  |  | 9,642,728 |  |  | — |  |  | 9,642,728 |  |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange forward contracts |  |  | 445,222 |  |  | — |  |  | 445,222 |  |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
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|  | Fair Value Measurements Using |
As of December 31, 2013 |  | Total Fair Value and Carrying Value on the Balance Sheets |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |
|  | $ |  | $ |  | $ |  | $ |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange forward contracts |  |  | 7,323,422 |  |  | — |  |  | 7,323,422 |  |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange forward contracts |  |  | 597,089 |  |  | — |  |  | 597,089 |  |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
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Schedule of effect of fair value of derivative instruments on the consolidated balance sheets |
|  | Fair Value of Derivatives Asset |
|  | At December 31, 2013 |  | At December 31, 2014 |
|  | Balance Sheet Location |  | Fair Value |  | Balance Sheet Location |  | Fair Value |
|  |  |  | $ |  |  |  | $ |
Foreign exchange forward contracts |  | Foreign currency derivative assets |  |  | 7,323,422 |  | Foreign currency derivative assets |  |  | 9,642,728 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | Fair Value of Derivatives Liability |
|  | At December 31, 2013 |  | At December 31, 2014 |
|  | Balance Sheet Location |  | Fair Value |  | Balance Sheet Location |  | Fair Value |
|  |  |  | $ |  |  |  | $ |
Foreign exchange forward contracts |  | Foreign currency derivative liabilities |  |  | 597,089 |  | Foreign currency derivative liabilities |  |  | 445,222 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Schedule of effect of derivative instruments on consolidated statements of operations |
|  |  |  | Amount of Gain (Loss) Recognized in Income on Derivatives |
|  |  |  | Years Ended December 31 |
|  | Location of Gain (Loss) Recognized in Income on Derivatives |
|  | 2012 |  | 2013 |  | 2014 |
|  |  |  | $ |  | $ |  | $ |
Foreign exchange option contracts |  | Gain(Loss) on change in foreign currency derivatives |  |  | 428,340 |  |  | 304,582 |  |  | — |
Foreign exchange forward contracts |  | Gain(Loss) on change in foreign currency derivatives |  |  | (4,797,513 | ) |  | 10,459,644 |  |  | 19,656,236 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  |  |  |  | (4,369,173 | ) |  | 10,764,226 |  |  | 19,656,236 |
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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258 + Details
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