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Derivative Instruments (Tables) | 12 Months Ended
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Dec. 31, 2015
Derivative Instruments [Abstract] |
Summarized volume of IDT Energy's outstanding |
Commodity |  | Settlement Dates |  | Volume
Electricity |  | January 2016 |  | 248,000 MWh
Electricity |  | February 2016 |  | 772,800 MWh
Electricity |  | March 2016 |  | 82,800 MWh
Electricity |  | April 2016 |  | 16,800 MWh
Electricity |  | July 2016 |  | 160,000 MWh
Electricity |  | August 2016 |  | 184,000 MWh
Electricity |  | September 2016 |  | 33,600 MWh
Natural gas |  | February 2016 |  | 852,500 Dth
Natural gas |  | April 2016 |  | 200,000 Dth
Natural gas |  | July 2016 |  | 1,110,000 Dth
Natural gas |  | August 2016 |  | 800,000 Dth
Schedule of fair value of outstanding derivative instruments recorded as assets and liability |
December 31 (in thousands) |  | 2015 |  | 2014
Asset Derivatives |  | Balance Sheet Location |  |  |  |  |  |
Derivatives not designated or not qualifying as hedging instruments: |  |  |  |  |  |  |  |
Energy contracts and options |  | Other current assets |  | $ | 1,681 |  | $ | 2,377
December 31 (in thousands) |  | 2015 |  | 2014
Liability Derivatives |  | Balance Sheet Location |  |  |  |  |  |
Derivatives not designated or not qualifying as hedging instruments: |  |  |  |  |  |  |  |
Energy contracts and options |  | Energy hedging contracts |  | $ | 2,192 |  | $ | 4,003
Effects of derivative instruments on the consolidated statements of operations |
|  |  |  | Amount of Gain (Loss) Recognized on Derivatives
|  |  |  | Year ended December 31,
(in thousands) |  |  |  | 2015 |  | 2014 |  | 2013
Derivatives not designated or not qualifying as hedging instruments |  | Location of Gain (Loss) Recognized on Derivatives |  |  |  |  |  |  |  |  |  |  |
Energy contracts and options |  | Direct cost of revenues |  | $ | (1,772 | ) |  | $ | (1,674 | ) |  | $ | 1,177

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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 4C -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959 Reference 2: 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=56946850&loc=SL5618551-113959 + 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=56946850&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=56946850&loc=SL5624171-113959 + Details
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