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FAIR VALUE MEASUREMENT (Details 3) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Effect of derivative instruments on consolidated statements of operations |  |  |
Amount of Gain (Loss) Recognized in Income on Derivatives | $ (4,369,173) | $ (5,750,981) | $ 1,656,928
Foreign exchange option contracts |  |  |
Effect of derivative instruments on consolidated statements of operations |  |  |
Amount of Gain (Loss) Recognized in Income on Derivatives | 428,340 | (6,933,353) | 6,636,821
Foreign exchange forward contracts |  |  |
Effect of derivative instruments on consolidated statements of operations |  |  |
Amount of Gain (Loss) Recognized in Income on Derivatives | $ (4,797,513) | $ 1,182,372 | $ (4,979,893)

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- Definition Net gain (loss) from the increase (decrease) in fair value of derivative instrument not designated as hedging instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph b(1)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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