2.4.0.80024 - Disclosure - Fair Value Measurements (Tables)truefalsefalse1false falsefalseFrom2013-01-01to2013-06-30http://www.sec.gov/CIK0001373485duration2013-01-01T00:00:002013-06-30T00:00:001true 1XBOR_FairValueMeasurementsTablesAbstractXBOR_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Fair Value Measurements Tables2false 2us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><div style="text-indent: 36pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt Times New Roman">The following tables summarize the valuation of the Company’s financial assets and liabilities at June 30, 2013 and December 31, 2012:<a name="FIS_UNIDENTIFIED_TABLE_11"></a></font></div> <div style="text-indent: 0pt; display: block"><br /> </div> <div style="text-align: left"> <table cellpadding="0" cellspacing="0" style="width: 100%; font: 10pt times new roman; font-size: 10pt; font-family: times new roman"> <tr> <td style="text-align: left; vertical-align: bottom; width: 42%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td colspan="13" style="vertical-align: bottom; width: 45%; border-bottom: black 2px solid; text-align: center"><font style="display: inline; font: bold 10pt times new roman"> <font style="display: inline; font: bold 10pt times new roman">Fair Value Measurements at Reporting Date Using</font></font></td> <td style="vertical-align: bottom; width: 1%; padding-bottom: 2px"> </td> </tr><tr> <td style="vertical-align: bottom; width: 42%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td colspan="2" style="vertical-align: bottom; width: 10%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman">Quoted Prices in Active Markets for Identical Assets or Liabilities</font></div> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman"> (Level 1)</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td colspan="2" style="vertical-align: bottom; width: 10%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman">Significant or Other Observable Inputs</font></div> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman">(Level 2)</font></div> </td> <td style="vertical-align: bottom; width: 1%; padding-bottom: 2px"> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td colspan="2" style="vertical-align: bottom; width: 10%; border-bottom: black 2px solid">  <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman">Significant <br /> Unobservable Inputs</font></div> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman">(Level 3)</font></div> </td> <td style="vertical-align: bottom; width: 1%; padding-bottom: 2px"> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td colspan="2" style="vertical-align: bottom; width: 10%; border-bottom: black 2px solid">  <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman">Fair Value at </font></div> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman">June 30, 2013</font></div> </td> <td style="vertical-align: bottom; width: 1%; padding-bottom: 2px"> </td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: bottom; width: 42%"> <div style="text-indent: -18pt; display: block; margin-left: 18pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Assets:</font></div> </td> <td style="text-align: left; vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">  </font></div> </td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: middle; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">  </font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: middle; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">  </font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: middle; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">  </font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: bottom; width: 42%; padding-bottom: 2px"> <div style="text-indent: -18pt; display: block; margin-left: 27pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Commodities derivatives</font></div> </td> <td style="text-align: left; vertical-align: bottom; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">155,744</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">155,744</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: bottom; width: 42%; padding-bottom: 2px"> <div style="text-indent: -18pt; display: block; margin-left: 18pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Total</font></div> </td> <td style="text-align: left; vertical-align: bottom; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">155,744</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">155,744</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: bottom; width: 42%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block"><font style="display: inline; font: 10pt times new roman">Liabilities</font></div> </td> <td style="vertical-align: bottom; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 9%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 9%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 9%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 9%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: bottom; width: 42%; padding-bottom: 2px"> <div style="text-indent: -18pt; display: block; margin-left: 27pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Environmental liability</font></div> </td> <td style="text-align: left; vertical-align: bottom; width: 1%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 9%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">(2,088,158</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">)  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">(2,088,158</font></div> </td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">)  </font></td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: bottom; width: 42%; padding-bottom: 2px"> <div style="text-indent: -18pt; display: block; margin-left: 27pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Asset retirement obligations (non-recurring)</font></div> </td> <td style="text-align: left; vertical-align: bottom; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">(3,399,096</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">)</font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">(3,399,096</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">)</font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: bottom; width: 42%"> <div style="text-indent: -18pt; display: block; margin-left: 18pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Total</font></div> </td> <td style="text-align: left; vertical-align: bottom; width: 1%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">(5,487,254</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">)  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">(5,487,254</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">) </font></td> </tr></table> </div> <div style="text-indent: 0pt; display: block"><br /> </div> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: justify"> </div> <div style="text-align: left"> <table cellpadding="0" cellspacing="0" style="width: 100%; font: 10pt times new roman; font-size: 10pt; font-family: times new roman"> <tr> <td style="text-align: left; vertical-align: bottom; width: 44%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td colspan="13" style="vertical-align: bottom; width: 23%; border-bottom: black 2px solid; text-align: center"><font style="display: inline; font: bold 10pt times new roman"> <font style="display: inline; font: bold 10pt times new roman">Fair Value Measurements at Reporting Date Using</font></font></td> <td style="vertical-align: bottom; width: 1%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman"> </font></div> </td> </tr><tr> <td style="text-align: left; vertical-align: bottom; width: 44%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: bold 10pt times new roman">(in thousands)</font></div> </td> <td colspan="2" style="vertical-align: bottom; width: 10%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman">Quoted Prices in Active Markets for Identical Assets or Liabilities</font></div> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman"> (Level 1)</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td colspan="2" style="vertical-align: bottom; width: 10%; border-bottom: black 2px solid">  <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman">Significant or Other Observable Inputs</font></div> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman">(Level 2)</font></div> </td> <td style="vertical-align: bottom; width: 1%; padding-bottom: 2px"> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td colspan="2" style="vertical-align: bottom; width: 10%; border-bottom: black 2px solid"><font style="display: inline; font: bold 10pt times new roman">  </font> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman"><font style="display: inline; font: bold 10pt times new roman">Significant <br /> Unobservable <br /> Inputs</font></font></div> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman"><font style="display: inline; font: bold 10pt times new roman">(Level 3)</font></font></div> </td> <td style="vertical-align: bottom; width: 1%; padding-bottom: 2px"> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td colspan="2" style="vertical-align: bottom; width: 10%; border-bottom: black 2px solid">  <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman">Fair Value at <br /> December 31, 2012</font></div> </td> <td style="vertical-align: bottom; width: 1%; padding-bottom: 2px"> </td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: bottom; width: 44%"> <div style="text-indent: -18pt; display: block; margin-left: 18pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Assets:</font></div> </td> <td style="text-align: left; vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">  </font></div> </td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: middle; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">  </font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: middle; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">  </font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: middle; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">  </font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: bottom; width: 44%; padding-bottom: 2px"> <div style="text-indent: -18pt; display: block; margin-left: 27pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Commodities derivatives</font></div> </td> <td style="text-align: left; vertical-align: bottom; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">290,788</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">290,788</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: bottom; width: 44%; padding-bottom: 2px"> <div style="text-indent: -18pt; display: block; margin-left: 18pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Total</font></div> </td> <td style="text-align: left; vertical-align: bottom; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">290,788</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">290,788</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: white"> <td style="vertical-align: bottom; width: 44%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 9%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 9%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 9%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 9%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: bottom; width: 44%; padding-bottom: 2px"> <div style="text-indent: -18pt; display: block; margin-left: 18pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Liabilities:</font></div> </td> <td style="vertical-align: bottom; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 9%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 9%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 9%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 9%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: bottom; width: 44%; padding-bottom: 2px"> <div style="text-indent: -18pt; display: block; margin-left: 27pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Environmental liability</font></div> </td> <td style="text-align: left; vertical-align: bottom; width: 1%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 9%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">(2,100,000</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">)  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">(2,100,000</font></div> </td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">)  </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: bottom; width: 44%; padding-bottom: 2px"> <div style="text-indent: -18pt; display: block; margin-left: 27pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Asset retirement obligations (non-recurring)</font></div> </td> <td style="text-align: left; vertical-align: bottom; width: 1%; border-bottom: black 2px solid"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">(3,317,358</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">)  </font></td> <td style="vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%; border-bottom: black 2px solid"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: middle; width: 9%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">(3,317,358</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">)  </font></td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: bottom; width: 44%"> <div style="text-indent: -18pt; display: block; margin-left: 36pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Total</font></div> </td> <td style="text-align: left; vertical-align: bottom; width: 1%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="vertical-align: middle; width: 9%; text-align: right"> <div style="text-align: right; text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">(5,417,358</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">)  </font></td> <td style="vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: middle; width: 1%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: middle; width: 9%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">(5,417,358</font></div> </td> <td style="text-align: left; vertical-align: middle; width: 1%"><font style="display: inline; font: 10pt times new roman">) </font></td> </tr></table> </div> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: justify"> </div></div>falsefalsefalsenonnum:textBlockItemTypenaTabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a,b,bb) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2C -URI http://asc.fasb.org/extlink&oid=25499696&loc=SL7498348-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19279-110258 Reference 4: 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 false0Schedule of assets and liabilities measured on a recurring and non-recurring basis3false 2us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><div style="text-indent: 0pt; display: block; margin-left: 9pt; margin-right: 3.3pt; text-align: left"><font style="display: inline; font: 10pt Times New Roman">The following is a summary of changes to fair value measurements using Level 3 inputs during the three months ended June 30, 2013:</font></div> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: justify"> </div> <div style="text-align: left"> <table cellpadding="0" cellspacing="0" style="width: 100%; font: 10pt times new roman; font-size: 10pt; font-family: times new roman"> <tr> <td style="vertical-align: bottom; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; padding-bottom: 2px"><font style="display: inline; font: bold 10pt times new roman"> </font></td> <td colspan="2" style="vertical-align: bottom; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: bold 10pt times new roman">Environmental Liability</font></div> </td> <td nowrap="nowrap" style="vertical-align: bottom; text-align: left; padding-bottom: 2px"><font style="display: inline; font: bold 10pt times new roman"> </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: bottom; width: 88%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Balance, December 31, 2012</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman"> </font></td> <td style="vertical-align: bottom; width: 1%; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></td> <td style="vertical-align: bottom; width: 9%; text-align: right"><font style="display: inline; font: 10pt times new roman">2,100,000</font></td> <td nowrap="nowrap" style="vertical-align: bottom; width: 1%; text-align: left"><font style="display: inline; font: 10pt times new roman"> </font></td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: bottom; width: 88%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Acquisitions</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman"> </font></td> <td style="vertical-align: bottom; width: 1%; text-align: left"><font style="display: inline; font: 10pt times new roman"> </font></td> <td style="vertical-align: bottom; width: 9%; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></td> <td nowrap="nowrap" style="vertical-align: bottom; width: 1%; text-align: left"><font style="display: inline; font: 10pt times new roman"> </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: bottom; width: 88%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Settlement of liabilities</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman"> </font></td> <td style="vertical-align: bottom; width: 1%; text-align: left"><font style="display: inline; font: 10pt times new roman"> </font></td> <td style="vertical-align: bottom; width: 9%; text-align: right"><font style="display: inline; font: 10pt times new roman">11,842</font></td> <td nowrap="nowrap" style="vertical-align: bottom; width: 1%; text-align: left"><font style="display: inline; font: 10pt times new roman"> </font></td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: bottom; width: 88%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Revisions of previous estimates</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman"> </font></td> <td style="vertical-align: bottom; width: 1%; border-bottom: black 2px solid; text-align: left"><font style="display: inline; font: 10pt times new roman"> </font></td> <td style="vertical-align: bottom; width: 9%; border-bottom: black 2px solid; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></td> <td nowrap="nowrap" style="vertical-align: bottom; width: 1%; text-align: left; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman"> </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: bottom; width: 88%; padding-bottom: 4px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Balance, June 30, 2013</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 1%; padding-bottom: 4px"><font style="display: inline; font: 10pt times new roman"> </font></td> <td style="vertical-align: bottom; width: 1%; border-bottom: black 4px double; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></td> <td style="vertical-align: bottom; width: 9%; border-bottom: black 4px double; text-align: right"><font style="display: inline; font: 10pt times new roman">2,088,158</font></td> <td nowrap="nowrap" style="vertical-align: bottom; width: 1%; text-align: left; padding-bottom: 4px"><font style="display: inline; font: 10pt times new roman"> </font></td> </tr></table> </div> </div>falsefalsefalsenonnum:textBlockItemTypenaTabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19279-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 false0Scheudle of changes to fair value measurements using Level 3 inputsfalseFair Value Measurements (Tables)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://xbres.com/role/FairValueMeasurementsTables13