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Derivative Instruments (Details) | 9 Months Ended
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Sep. 30, 2013
Electricity [Member] |
Summarized volume of IDT Energy's outstanding future contracts |
Commodity | Electricity
Settlement Dates | December 2013
Volume | 88,340 MWh
Electricity one [Member] |
Summarized volume of IDT Energy's outstanding future contracts |
Commodity | Electricity
Settlement Dates | January 2014
Volume | 44,000 MWh
Electricity two [Member] |
Summarized volume of IDT Energy's outstanding future contracts |
Commodity | Electricity
Settlement Dates | February 2014
Volume | 40,000 MWh
Electricity three [Member] |
Summarized volume of IDT Energy's outstanding future contracts |
Commodity | Electricity
Settlement Dates | July 2014
Volume | 52,800 MWh
Electricity four [Member] |
Summarized volume of IDT Energy's outstanding future contracts |
Commodity | Electricity
Settlement Dates | August 2014
Volume | 50,400 MWh
Electricity five [Member] |
Summarized volume of IDT Energy's outstanding future contracts |
Commodity | Electricity
Settlement Dates | September 2014
Volume | 16,800 MWh
Natural Gas [Member] |
Summarized volume of IDT Energy's outstanding future contracts |
Commodity | Natural gas
Settlement Dates | November 2013
Volume | 150,000 Dth
Natural Gas one [Member] |
Summarized volume of IDT Energy's outstanding future contracts |
Commodity | Natural gas
Settlement Dates | December 2013
Volume | 775,000 Dth
Natural Gas Two [Member] |
Summarized volume of IDT Energy's outstanding future contracts |
Commodity | Natural gas
Settlement Dates | January 2014
Volume | 375,000 Dth
Natural Gas Three [Member] |
Summarized volume of IDT Energy's outstanding future contracts |
Commodity | Natural gas
Settlement Dates | February 2014
Volume | 1,425,000 Dth
Natural Gas Four [Member] |
Summarized volume of IDT Energy's outstanding future contracts |
Commodity | Natural gas
Settlement Dates | March 2014
Volume | 225,000 Dth
Natural Gas Five [Member] |
Summarized volume of IDT Energy's outstanding future contracts |
Commodity | Natural gas
Settlement Dates | July 2014
Volume | 77,500 Dth

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- Definition The underlying refers to the price on the security, commodity, index, or other variable specified by the contract. + References No definition available. + Details
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- Definition Information that would enable users to understand the volume of the entity's derivative activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959 Reference 2: 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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