2.2.0.7 false Accrual for Future Abandonment Liabilities 0206 - Disclosure - Accrual for Future Abandonment Liabilities true false false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ 2 Accrual for Future Abandonment Liabilities [Abstract] 0 us-gaap_AssetRetirementObligationAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 3 Accrual for Future Abandonment Liabilities 1 us-gaap_AssetRetirementObligationDisclosureTextBlock us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0   <div style="font-family: 'Times New Roman',Times,serif"> <div align="left" style="font-size: 10pt; margin-top: 12pt"><b>6. Accrual for Future Abandonment Liabilities</b> </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     In accordance with accounting for asset retirement and environmental obligations under GAAP, the Company records the fair value of a liability for the legal obligation to retire an asset in the period in which it is incurred with the corresponding cost capitalized by increasing the carrying amount of the related long-lived asset. Upon adoption, the Company recorded an asset retirement obligation to reflect the Company’s legal obligations related to future plugging and abandonment of its oil and natural gas wells. The liability is accreted to its then present value each period, and the capitalized cost is depreciated over the useful life of the related asset. If the liability is settled for an amount other than the recorded amount, the difference is recognized in proved oil and gas properties. </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     To estimate the fair value of an asset retirement obligation, the Company employs a present value technique, which reflects certain assumptions, including its credit-adjusted risk-free interest rate, the estimated settlement date of the liability and the estimated current cost to settle the liability. Changes in timing or to the original estimate of cash flows will result in changes to the carrying amount of the liability. </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     The following roll forward is provided as a reconciliation of the beginning and ending aggregate carrying amounts of the asset retirement obligation: </div> <div align="center"> <table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">  <tr valign="bottom"> <td width="88%"> </td> <td width="5%"> </td> <td width="1%"> </td> <td width="5%"> </td> <td width="1%"> </td> </tr> <tr style="font-size: 8pt" valign="bottom"> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>(In thousands)</b></td> <td> </td> </tr>   <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:15px; text-indent:-15px">Abandonment liability as of January 1, 2010 (1) </div></td> <td> </td> <td align="left">$</td> <td align="right">417,887</td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:15px; text-indent:-15px">Liabilities incurred </div></td> <td> </td> <td> </td> <td align="right">1,092</td> <td> </td> </tr> <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:15px; text-indent:-15px">Liabilities settled </div></td> <td> </td> <td nowrap="nowrap" align="left"> </td> <td align="right">(26,111</td> <td nowrap="nowrap">)</td> </tr> <tr valign="bottom"> <td> <div style="margin-left:15px; text-indent:-15px">Accretion expense </div></td> <td> </td> <td> </td> <td align="right">18,113</td> <td> </td> </tr> <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:15px; text-indent:-15px">Revisions to previous estimates </div></td> <td> </td> <td nowrap="nowrap" align="left"> </td> <td align="right">(15,739</td> <td nowrap="nowrap">)</td> </tr> <tr style="font-size: 1px"> <td> <div style="margin-left:15px; text-indent:-15px">  </div></td> <td> </td> <td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:15px; text-indent:-15px">Abandonment liability as of June 30, 2010 (2) </div></td> <td> </td> <td align="left">$</td> <td align="right">395,242</td> <td> </td> </tr> <tr style="font-size: 1px"> <td> <div style="margin-left:15px; text-indent:-15px">  </div></td> <td> </td> <td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td> <td> </td> </tr>  </table> </div> <div align="left"> <div style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">  </div> </div> <table width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; text-align: left"> <tr> <td width="3%"></td> <td width="1%"></td> <td width="96"></td> </tr> <tr valign="top"> <td nowrap="nowrap" align="left">(1)</td> <td> </td> <td>Includes $54.9 million classified as a current liability at January 1, 2010.</td> </tr> <tr style="font-size: 3pt"> <td> </td> </tr> <tr valign="top"> <td nowrap="nowrap" align="left">(2)</td> <td> </td> <td>Includes $86.8 million classified as a current liability at June 30, 2010.</td> </tr> </table> </div>  <!-- Begin Block Tagged Note false false false us-types:textBlockItemType textblock Description of the asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. This element may be used for all the disclosures related to asset retirement obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 143 -Paragraph 22 false 1 2 false UnKnown UnKnown UnKnown false true