2.4.0.8025 - Disclosure - Fair Value Measurements (Tables)truefalsefalse1false falsefalseContext_6ME__30-Jun-2013http://www.sec.gov/CIK0000086264duration2013-01-01T00:00:002013-06-30T00:00:001true 1us-gaap_FairValueDisclosuresAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Fair Value Measurements [Abstract]2false 2us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<div align="right"> <table style="width: 100%; font-family: times new roman; font-size: 10pt;" cellspacing="0" cellpadding="0"> <tr> <td style="padding-bottom: 2px;" valign="bottom">  </td> <td style="padding-bottom: 2px;" valign="bottom"> </td> <td style="border-bottom: black 2px solid;" valign="bottom" colspan="14"> <div align="center" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;">Fair Value Measurements Using</div> </td> <td style="text-align: left; padding-bottom: 2px;" valign="bottom" nowrap="nowrap"> </td> </tr> <tr> <td align="left" style="padding-bottom: 2px;" valign="bottom"> <div align="left" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;">(in thousands)</div> </td> <td style="padding-bottom: 2px;" valign="bottom"> </td> <td style="border-bottom: black 2px solid;" valign="bottom" colspan="2"> <div align="center" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;">Level 1</div> </td> <td style="text-align: left; padding-bottom: 2px;" valign="bottom" nowrap="nowrap"> </td> <td style="padding-bottom: 2px;" valign="bottom"> </td> <td style="border-bottom: black 2px solid;" valign="bottom" colspan="2"> <div align="center" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;">Level 2</div> </td> <td style="text-align: left; padding-bottom: 2px;" valign="bottom" nowrap="nowrap"> </td> <td style="padding-bottom: 2px;" valign="bottom"> </td> <td style="border-bottom: black 2px solid;" valign="bottom" colspan="2"> <div align="center" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;">Level 3</div> </td> <td style="text-align: left; padding-bottom: 2px;" valign="bottom" nowrap="nowrap"> </td> <td style="padding-bottom: 2px;" valign="bottom"> </td> <td style="border-bottom: black 2px solid;" valign="bottom" colspan="2"> <div align="center" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;">Total</div> </td> <td style="text-align: left; padding-bottom: 2px;" valign="bottom" nowrap="nowrap"> </td> </tr> <tr> <td align="left" valign="bottom"> <div align="left" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;">June 30, 2013</div> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td style="text-align: left;" valign="bottom" nowrap="nowrap"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td style="text-align: left;" valign="bottom" nowrap="nowrap"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td style="text-align: left;" valign="bottom" nowrap="nowrap"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td style="text-align: left;" valign="bottom" nowrap="nowrap"> </td> </tr> <tr> <td align="left" valign="bottom"> <div align="left" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;">Assets:</div> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td style="text-align: left;" valign="bottom" nowrap="nowrap"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td style="text-align: left;" valign="bottom" nowrap="nowrap"> </td> <td valign="bottom"> </td> <td style="text-align: left;" valign="bottom" nowrap="nowrap"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td style="text-align: left;" valign="bottom" nowrap="nowrap"> </td> </tr> <tr bgcolor="#cceeff"> <td align="left" valign="bottom" width="52%"> <div align="left" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;">    Commodity derivatives</div> </td> <td align="left" valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%">$</td> <td style="text-align: right;" valign="bottom" width="9%">-</td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td align="left" valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%">$</td> <td style="text-align: right;" valign="bottom" width="9%">85</td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%">$</td> <td style="text-align: right;" valign="bottom" width="9%">-</td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%">$</td> <td style="text-align: right;" valign="bottom" width="9%">85</td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> </tr> <tr bgcolor="white"> <td valign="bottom" width="52%">  </td> <td valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%"> </td> <td style="text-align: right;" valign="bottom" width="9%"> </td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%"> </td> <td style="text-align: right;" valign="bottom" width="9%"> </td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%"> </td> <td style="text-align: right;" valign="bottom" width="9%"> </td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%"> </td> <td style="text-align: right;" valign="bottom" width="9%"> </td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> </tr> <tr bgcolor="#cceeff"> <td align="left" valign="bottom" width="52%"> <div align="left" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;">December 31, 2012</div> </td> <td valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%"> </td> <td style="text-align: right;" valign="bottom" width="9%"> </td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%"> </td> <td style="text-align: right;" valign="bottom" width="9%"> </td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%"> </td> <td style="text-align: right;" valign="bottom" width="9%"> </td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%"> </td> <td style="text-align: right;" valign="bottom" width="9%"> </td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> </tr> <tr bgcolor="white"> <td align="left" valign="bottom" width="52%"> <div align="left" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;">Liabilities:</div> </td> <td valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%"> </td> <td style="text-align: right;" valign="bottom" width="9%"> </td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%"> </td> <td style="text-align: right;" valign="bottom" width="9%"> </td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%"> </td> <td style="text-align: right;" valign="bottom" width="9%"> </td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%"> </td> <td style="text-align: right;" valign="bottom" width="9%"> </td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> </tr> <tr bgcolor="#cceeff"> <td align="left" valign="bottom" width="52%"> <div align="left" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;">    Commodity derivatives</div> </td> <td align="left" valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%">$</td> <td style="text-align: right;" valign="bottom" width="9%">-</td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td align="left" valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%">$</td> <td style="text-align: right;" valign="bottom" width="9%">87</td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td align="left" valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%">$</td> <td style="text-align: right;" valign="bottom" width="9%">-</td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> <td align="left" valign="bottom" width="1%"> </td> <td style="text-align: left;" valign="bottom" width="1%">$</td> <td style="text-align: right;" valign="bottom" width="9%">87</td> <td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"> </td> </tr> </table> </div>falsefalsefalsenonnum:textBlockItemTypenaTabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 false0Summary of financial assets and liabilities at fair valuefalseFair Value Measurements (Tables)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.cng.com/role/FairValueMeasurementsTables12