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Derivative Instruments (Tables) | 9 Months Ended
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Sep. 30, 2013
Derivative Instruments [Abstract] |
Summarized volume of IDT Energy's outstanding future contracts |
Commodity |  | Settlement Dates |  | Volume
Electricity |  | December 2013 |  | 88,340 MWh
Electricity |  | January 2014 |  | 44,000 MWh
Electricity |  | February 2014 |  | 40,000 MWh
Electricity |  | July 2014 |  | 52,800 MWh
Electricity |  | August 2014 |  | 50,400 MWh
Electricity |  | September 2014 |  | 16,800 MWh
Natural gas |  | November 2013 |  | 150,000 Dth
Natural gas |  | December 2013 |  | 775,000 Dth
Natural gas |  | January 2014 |  | 375,000 Dth
Natural gas |  | February 2014 |  | 1,425,000 Dth
Natural gas |  | March 2014 |  | 225,000 Dth
Natural gas |  | July 2014 |  | 77,500 Dth
Schedule of fair value of outstanding derivative instruments recorded as assets and liabilities |
Asset Derivatives |  | Balance Sheet Location |  | September 30, 2013 |  |  | December 31, 2012 |
|  |  |  | (in thousands) |
Derivatives not designated or not qualifying as hedging instruments: |  |  |  |  |  |  |  |
Energy contracts and options |  | Other current assets |  | $ | 1,080 |  |  | $ | 308 |
Liability Derivatives |  | Balance Sheet Location |  | September 30, 2013 |  |  | December 31, 2012 |
|  |  |  | (in thousands) |
Derivatives not designated or not qualifying as hedging instruments: |  |  |  |  |  |  |  |
Energy contracts and options |  | Other current liabilities |  | $ | 758 |  |  | $ | 152 |
Effects of derivative instruments on the consolidated statements of operations |
|  | Amount of Gain (Loss) Recognized on Derivatives |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
Derivatives not designated or not qualifying as hedging instruments |  | Location of Gain (Loss) Recognized on Derivatives |  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
|  |  |  | (in thousands) |
Energy contracts and options |  | Direct cost of revenues |  | $ | (426 | ) |  | $ | (17 | ) |  | $ | (394 | ) |  | $ | (101 | )

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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=7476318&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=7476318&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of the notional amounts of outstanding derivative positions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959 + Details
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- Definition Tabular disclosure for other derivative instruments not designated as hedging instruments of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the 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 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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