2.4.0.8018 - Disclosure - Commitmentstruefalsefalse1false falsefalseContext_6ME__30-Jun-2013http://www.sec.gov/CIK0000086264duration2013-01-01T00:00:002013-06-30T00:00:001true 1us-gaap_CommitmentsAndContingenciesDisclosureAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Commitments [Abstract]2false 2us-gaap_CommitmentsAndContingenciesDisclosureTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<div style="line-height: 11.4pt; text-indent: 0pt; display: block;"><font style="display: inline; font-family: times new roman; font-size: 10pt; font-weight: bold;"><font style="display: inline; text-decoration: underline;">Note 12 &#8211; Commitments</font></font></div> <div style="line-height: 10.25pt; text-indent: 0pt; display: block;">&#160;</div> <div align="justify" style="line-height: 10.25pt; text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;"><font style="display: inline; font-family: times new roman; font-size: 10pt;"><font style="display: inline; font-size: 10pt;">The Company has long-term firm transportation contracts.&#160;&#160;Firm transportation volumes and the related demand charges for the remaining term of the contracts at June 30, 2013 are (i) for the remainder of 2013; approximately 8,000 dekatherms per day capacity with demand charges ranging between $0.22 and $1.40 per dekatherm, (ii) for 2014 through May 2015; 4,590 dekatherms per day with demand charges ranging between $0.22 and $0.65, (iii) for June 2015 through 2017; 3,300 dekatherms per day with demand charges of $0.65 per dekatherm and for 2018 through April 2036; 1,000 dekatherms per day with demand charges of $0.22 per dekatherm.&#160;&#160;A liability of approximately $2.8 million related to firm transportation contracts assumed in a 2011 asset acquisition, which represents the remaining commitment, is reflected on the Company&#8217;s consolidated balance sheets as of June 30, 2013</font><font style="display: inline; font-family: times new roman;">.</font></font></div>falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for commitments and contingencies.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 210.5-02.25) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308 false0CommitmentsfalseCommitmentsUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.cng.com/role/DisclosureCommitments12