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Commitments and Contingencies (Details) (USD $) | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2013 | Oct. 31, 2013 | Dec. 31, 2012
Commitments and Contingencies (Textual) |  |  |
Trade accounts payable | $ 17,565,000 |  | $ 20,641,000
Purchase and other commitments | 1,300,000 | 800,000 |
Amount accrued for income tax audit | 900,000 |  |
Description of termination date of agreement between BP Energy and IDT Energy | The agreement's termination date is June 30, 2014, which automatically renews for an additional year unless either party provides written notice to the other party at least six months prior to June 30, 2014 that it will not renew the agreement. |  |
Minimum [Member] |  |  |
Commitments and Contingencies (Textual) |  |  |
Tax liability by Company | 0 |  |
Maximum [Member] |  |  |
Commitments and Contingencies (Textual) |  |  |
Tax liability by Company | 300,000 |  |
JPMorgan [Member] |  |  |
Commitments and Contingencies (Textual) |  |  |
Line of credit facility, amount outstanding | 2,000,000 |  |
BP [Member] |  |  |
Commitments and Contingencies (Textual) |  |  |
Restricted cash pledged as collateral | 400,000 |  |
Trade accounts receivable pledged as collateral | 37,700,000 |  |
Trade accounts payable | 13,800,000 |  |
IDT Energy [Member] |  |  |
Commitments and Contingencies (Textual) |  |  |
Aggregate performance bonds outstanding | $ 3,000,000 |  |

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- Definition Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The noncurrent portion of the amount recognized for uncertain tax positions as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
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