<?xml version="1.0" encoding="us-ascii"?><InstanceReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><Version>2.4.0.8</Version><ReportLongName>10501 - Disclosure - Indebtedness</ReportLongName><DisplayLabelColumn>true</DisplayLabelColumn><ShowElementNames>false</ShowElementNames><RoundingOption /><HasEmbeddedReports>false</HasEmbeddedReports><Columns><Column FlagID="0"><Id>1</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><CurrencyCode /><FootnoteIndexer /><hasSegments>false</hasSegments><hasScenarios>false</hasScenarios><MCU><KeyName /><CurrencySymbol /><contextRef><ContextID>Duration_1_1_2013_To_6_30_2013</ContextID><EntitySchema>http://www.sec.gov/CIK</EntitySchema><EntityValue>0000750199</EntityValue><PeriodDisplayName /><PeriodType>duration</PeriodType><PeriodStartDate>2013-01-01T00:00:00</PeriodStartDate><PeriodEndDate>2013-06-30T00:00:00</PeriodEndDate><Segments /><Scenarios /></contextRef><UPS /><CurrencyCode /><OriginalCurrencyCode /></MCU><CurrencySymbol /><Labels><Label Key="CalendarSupplement" Id="0" Label="6 Months Ended" /><Label Key="Calendar" Id="1" Label="Jun. 30, 2013" /></Labels></Column></Columns><Rows><Row FlagID="0"><Id>1</Id><IsAbstractGroupTitle>true</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>1</Level><ElementName>us-gaap_DebtDisclosureAbstract</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText /><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>xbrli:stringItemType</ElementDataType><SimpleDataType>string</SimpleDataType><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>Indebtedness [Abstract]</Label></Row><Row FlagID="0"><Id>2</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>2</Level><ElementName>us-gaap_DebtDisclosureTextBlock</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><PreferredLabelRole>verboseLabel</PreferredLabelRole><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="Duration_1_1_2013_To_6_30_2013" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>&lt;div&gt; &lt;div style="margin-left:0pt;margin-right:0pt;"&gt;
		&lt;p style="margin:0pt;border-bottom:1pt none #D9D9D9 ;font-family:Times New Roman;font-size: 10pt"&gt;
			&lt;font style="display: inline;font-weight:bold;font-size:10pt;"&gt;(5) Indebtedness &lt;/font&gt;
		&lt;/p&gt;
		&lt;p style="margin:4.5pt 0pt 0pt;text-indent:24.5pt;border-top:1pt none #D9D9D9 ;font-family:Times New Roman;font-size: 10pt"&gt;
			&lt;font style="display: inline;font-size:10pt;"&gt;The following table sets forth our indebtedness. &lt;/font&gt;
		&lt;/p&gt;
		&lt;div style="width:100%"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 100.00%;margin-left:0pt;"&gt;
			&lt;tr&gt;
				&lt;td valign="bottom" style="width:78.54%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:1pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;height:1pt;overflow:hidden;font-size: 1pt"&gt;
						&lt;font style="display: inline;font-size:1pt;"&gt;&amp;nbsp;&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:01.24%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:1pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;height:1pt;overflow:hidden;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="top" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:1pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;height:1pt;overflow:hidden;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:07.74%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:1pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;height:1pt;overflow:hidden;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:1pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;height:1pt;overflow:hidden;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="top" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:1pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;height:1pt;overflow:hidden;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:08.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:1pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;height:1pt;overflow:hidden;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr&gt;
				&lt;td valign="bottom" style="width:78.54%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:26pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 7pt"&gt;
						&lt;font style="display: inline;font-weight:bold;font-size:7pt;"&gt;&amp;nbsp;&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:01.24%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:26pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td colspan="2" valign="bottom" style="width:00.02%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1.5pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:26pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;text-align:center;font-family:Times New Roman;font-size: 7pt"&gt;
						&lt;font style="display: inline;font-weight:bold;font-size:7pt;"&gt;June 30,&lt;/font&gt;&lt;br /&gt;&lt;font style="display: inline;font-weight:bold;font-size:7pt;"&gt;2013&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:26pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;text-align:center;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td colspan="2" valign="bottom" style="width:00.02%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1.5pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:26pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;text-align:center;font-family:Times New Roman;font-size: 7pt"&gt;
						&lt;font style="display: inline;font-weight:bold;font-size:7pt;"&gt;December 31,&lt;/font&gt;&lt;br /&gt;&lt;font style="display: inline;font-weight:bold;font-size:7pt;"&gt;2012&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr&gt;
				&lt;td valign="bottom" style="width:78.54%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 7pt"&gt;
						&lt;font style="display: inline;font-weight:bold;font-size:7pt;text-decoration:underline;"&gt;&amp;nbsp;&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:01.24%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt 24pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td colspan="5" valign="bottom" style="width:00.02%;border-top:1pt solid #000000 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #auto;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;text-align:center;font-family:Times New Roman;font-size: 7pt"&gt;
						&lt;font style="display: inline;font-weight:bold;font-size:7pt;"&gt;(In thousands)&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr&gt;
				&lt;td valign="bottom" style="width:78.54%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 10pt"&gt;
						&lt;font style="display: inline;font-size:10pt;"&gt;8.25% Senior Notes, face amount of &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;$510.0&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million, interest rate of &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;8.25%&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; payable semi-annually,&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:01.24%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt 24pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="top" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:07.74%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;text-align:right;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;text-align:right;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="top" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:08.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;text-align:right;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr&gt;
				&lt;td valign="bottom" style="width:78.54%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt 12pt;font-family:Times New Roman;font-size: 10pt"&gt;
						&lt;font style="display: inline;font-size:10pt;"&gt; in arrears on&amp;nbsp; &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;February&amp;nbsp;15&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; and August 15 of each year,&amp;nbsp;&amp;nbsp;maturity date &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;February 15, 2018&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:01.24%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt 24pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 10pt"&gt;
						&lt;font style="display: inline;font-size:10pt;"&gt;$&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:07.74%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"&gt;&lt;div style="float:left"&gt;&lt;/div&gt;496,106&amp;nbsp;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 10pt"&gt;
						&lt;font style="display: inline;font-size:10pt;"&gt;$&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:08.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"&gt;&lt;div style="float:left"&gt;&lt;/div&gt;494,911&amp;nbsp;
				&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr&gt;
				&lt;td valign="bottom" style="width:78.54%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 10pt"&gt;
						&lt;font style="display: inline;font-size:10pt;"&gt;Senior credit facility, interest rate based on &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;base rate or LIBOR plus a floating spread&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;, maturity &lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:01.24%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:07.74%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:08.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr&gt;
				&lt;td valign="bottom" style="width:78.54%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt 12pt;font-family:Times New Roman;font-size: 10pt"&gt;
						&lt;font style="display: inline;font-size:10pt;"&gt;date &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;October 31, 2016&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;&amp;nbsp;&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:01.24%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="top" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1.5pt solid #000000 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:07.74%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1.5pt solid #000000 ;border-right:1pt none #D9D9D9 ;height:12pt;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"&gt;&lt;div style="float:left"&gt;&lt;/div&gt;165,000&amp;nbsp;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;text-align:right;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="top" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1.5pt solid #000000 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:08.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1.5pt solid #000000 ;border-right:1pt none #D9D9D9 ;height:12pt;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"&gt;&lt;div style="float:left"&gt;&lt;/div&gt;195,000&amp;nbsp;
				&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr&gt;
				&lt;td valign="top" style="width:78.54%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt 24pt;font-family:Times New Roman;font-size: 10pt"&gt;
						&lt;font style="display: inline;font-size:10pt;"&gt;Total indebtedness &lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:01.24%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="top" style="width:01.50%;border-top:1pt solid #000000 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:07.74%;border-top:1pt solid #000000 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"&gt;&lt;div style="float:left"&gt;&lt;/div&gt;661,106&amp;nbsp;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="top" style="width:01.50%;border-top:1pt solid #000000 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:08.00%;border-top:1pt solid #000000 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"&gt;&lt;div style="float:left"&gt;&lt;/div&gt;689,911&amp;nbsp;
				&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr&gt;
				&lt;td valign="top" style="width:78.54%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt 24pt;font-family:Times New Roman;font-size: 10pt"&gt;
						&lt;font style="display: inline;font-size:10pt;"&gt;Current portion of indebtedness &lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:01.24%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="top" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1.5pt solid #000000 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:07.74%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1.5pt solid #000000 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 3.25pt 0.05pt 0pt;text-align:right;font-family:Times New Roman;font-size: 10pt"&gt;
						&lt;font style="display: inline;font-size:10pt;"&gt; &amp;nbsp;-&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;text-align:right;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="top" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1.5pt solid #000000 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:08.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1.5pt solid #000000 ;border-right:1pt none #D9D9D9 ;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 3.25pt 0.05pt 0pt;text-align:right;font-family:Times New Roman;font-size: 10pt"&gt;
						&lt;font style="display: inline;font-size:10pt;"&gt; &amp;nbsp;-&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr&gt;
				&lt;td valign="top" style="width:78.54%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt 24pt;font-family:Times New Roman;font-size: 10pt"&gt;
						&lt;font style="display: inline;font-size:10pt;"&gt;Noncurrent portion of indebtedness &lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="bottom" style="width:01.24%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="top" style="width:01.50%;border-top:1pt solid #000000 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 10pt"&gt;
						&lt;font style="display: inline;font-size:10pt;"&gt;$&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:07.74%;border-top:1pt solid #000000 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"&gt;&lt;div style="float:left"&gt;&lt;/div&gt;661,106&amp;nbsp;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:01.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 12pt"&gt;
						&amp;nbsp;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="top" style="width:01.50%;border-top:1pt solid #000000 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;padding:0pt;"&gt;
					&lt;p style="margin:0pt 0pt 0.05pt;font-family:Times New Roman;font-size: 10pt"&gt;
						&lt;font style="display: inline;font-size:10pt;"&gt;$&lt;/font&gt;&lt;/p&gt;
				&lt;/td&gt;
				&lt;td valign="middle" style="width:08.00%;border-top:1pt solid #000000 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;height:12pt;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"&gt;&lt;div style="float:left"&gt;&lt;/div&gt;689,911&amp;nbsp;
				&lt;/td&gt;
			&lt;/tr&gt;
		&lt;/table&gt;&lt;/div&gt;
		&lt;p style="margin:13.5pt 0pt 0pt 12.25pt;border-bottom:1pt none #D9D9D9 ;font-family:Times New Roman;font-size: 10pt"&gt;
			&lt;font style="display: inline;font-style:italic;font-size:10pt;"&gt;8.25% Senior Notes&lt;/font&gt;
		&lt;/p&gt;
		&lt;p style="margin:9pt 0pt 0pt;text-indent:24.5pt;border-top:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;font-family:Times New Roman;font-size: 10pt"&gt;
			&lt;font style="display: inline;font-size:10pt;"&gt;The 8.25% senior notes consist of &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;$510.0&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million in aggregate principal amount of our 8.25% senior notes due 2018 (the &amp;#x201C;8.25% Senior Notes&amp;#x201D;) issued under an Indenture dated February 14, 2011 (the &amp;#x201C;2011 Indenture&amp;#x201D;). &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;The 8.25% Senior Notes bear interest from the date of their issuance at an annual rate of &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;8.25%&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; with interest due semi-annually, in arrears, on February&amp;nbsp;15th and August&amp;nbsp;15th of each year. The 8.25% Senior Notes are fully and unconditionally guaranteed, jointly and severally, on an unsecured senior basis initially by each of our existing direct and indirect domestic subsidiaries (other than immaterial subsidiaries). The 8.25% Senior Notes will mature on February&amp;nbsp;15, 2018.&amp;nbsp;&amp;nbsp;The effective interest rate on the 8.25% Senior Notes is approximately &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;9.1%.&lt;/font&gt;
		&lt;/p&gt;
		&lt;p style="margin:4.5pt 0pt 0pt;text-indent:24.5pt;border-top:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;font-family:Times New Roman;font-size: 10pt"&gt;
			&lt;font style="display: inline;font-size:10pt;"&gt;We issued the 8.25% Senior Notes in two different private placements, as follows. On February&amp;nbsp;14, 2011, we issued $&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;210.0&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million in aggregate principal amount of our 8.25% senior notes due 2018 (the &amp;#x201C;2011 Senior Notes&amp;#x201D;) under an Indenture dated as of February&amp;nbsp;14, 2011 (the &amp;#x201C;2011 Indenture&amp;#x201D;). We used the net proceeds from the offering of the 2011 Senior Notes of $&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;202.0&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million, after deducting the initial purchasers&amp;#x2019; discount and offering expenses payable by us, to acquire an asset package consisting of certain shallow-water Gulf of Mexico shelf oil and natural gas interests surrounding the Mississippi River delta and a related gathering system from Anglo-Suisse Offshore Partners, LLC (&amp;#x201C;ASOP&amp;#x201D;) for a purchase price of $&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;200.7&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million, before adjustments to reflect an economic effective date of January&amp;nbsp;1, 2011 (the &amp;#x201C;ASOP Acquisition&amp;#x201D;).&amp;nbsp;&amp;nbsp;For additional information regarding the 2011 Senior Notes, see Note 7, &amp;#x201C;Indebtedness,&amp;#x201D; of our 2012 Annual Report.&lt;/font&gt;
		&lt;/p&gt;
		&lt;p style="margin:4.5pt 0pt 0pt;text-indent:24.5pt;border-top:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;font-family:Times New Roman;font-size: 10pt"&gt;
			&lt;font style="display: inline;font-size:10pt;"&gt;On October 25, 2012, we issued &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;$300.0&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million in aggregate principal amount of our 2012 Senior Notes under an Indenture dated as of October 25, 2012 (the &amp;#x201C;2012 Indenture&amp;#x201D;).&amp;nbsp;&amp;nbsp;As described in Note 2, &amp;#x201C;Acquisitions,&amp;#x201D; we used the net proceeds from the offering of the 2012 Senior Notes of $&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;28&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;9.5&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million, after deducting the initial purchasers&amp;#x2019; discount, to fund a portion of the Hilcorp Acquisition.&amp;nbsp;&amp;nbsp;The purchase price of the 2012 Senior Notes included &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;$4.8&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million of accrued interest for the period from August 15, 2012 to October 25, 2012, which we recorded as interest payable.&lt;/font&gt;
		&lt;/p&gt;
		&lt;p style="margin:4.5pt 0pt 0pt;text-indent:24.5pt;border-top:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;font-family:Times New Roman;font-size: 10pt"&gt;
			&lt;font style="display: inline;font-size:10pt;"&gt;The 2012 Senior Notes were offered in a private placement only to qualified institutional buyers under Rule 144A promulgated under the Securities Act of 1933, as amended (the &amp;#x201C;Securities Act&amp;#x201D;), or to persons outside of the United States in compliance with Regulation S promulgated under the Securities Act. &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;The 2012 Senior Notes had terms that were substantially identical to the terms of our 2011 Senior Notes.&amp;nbsp;&amp;nbsp;Pursuant to a registration rights agreement executed as part of the sale of the 2012 Senior Notes (&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;the &amp;#x201C;Registration Rights Agreement&amp;#x201D;), we have issued publicly registered additional notes under our 2011 Indenture in exchange for the 2012 Senior Notes. As a result of this exchange offer, 100% in aggregate principal amount of the 2012 Senior Notes was exchanged for the notes under the 2011 Indenture, effective as of June 10, 2013.&amp;nbsp;&amp;nbsp;All of the 8.25% Senior Notes are now issued under the 2011 Indenture, regardless of which private placement they were issued under.&amp;nbsp;&amp;nbsp;For more information regarding the 2012 Senior Notes, see Note 7, &amp;#x201C;Indebtedness,&amp;#x201D; of our 2012 Annual Report.&lt;/font&gt;
		&lt;/p&gt;
		&lt;p style="margin:9pt 0pt 0pt 12.25pt;border-top:1pt none #D9D9D9 ;border-bottom:1pt none #D9D9D9 ;font-family:Times New Roman;font-size: 10pt"&gt;
			&lt;font style="display: inline;font-style:italic;font-size:10pt;"&gt;Senior Credit Facility &lt;/font&gt;
		&lt;/p&gt;
		&lt;p style="margin:4.5pt 0pt 0pt;text-indent:24.5pt;border-top:1pt none #D9D9D9 ;font-family:Times New Roman;font-size: 10pt"&gt;
			&lt;font style="display: inline;font-size:10pt;"&gt;On February&amp;nbsp;14, 2011, we entered into our senior secured credit facility with BMO Capital Markets, as lead arranger, and Bank of Montreal, as administrative agent and a lender, and the other lender parties thereto (as amended and restated, the &amp;#x201C;Senior Credit Facility&amp;#x201D;). The original terms of our Senior Credit Facility established a revolving credit facility with a &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;four&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;-year term that could be used for revolving credit loans and letters of credit up to an aggregate principal amount of $&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;250.0&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million. &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;On October 31, 2012, in connection with the Hilcorp Acquisition, through an amendment and restatement of our Senior Credit Facility, the aggregate commitment under this facility was increased to a maximum of $&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;750.0&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million and the maturity date was extended to October&amp;nbsp;31, 2016. &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;The maximum amount of letters of credit that may be outstanding at any one time is $&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;20.0&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million. The amount available under the revolving credit facility is limited by the borrowing base. &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;The borrowing base under our Senior Credit Facility has been determined at the discretion of the lenders, based on the collateral value of our proved reserves and is subject to potential special and regular semi-annual redeterminations.&amp;nbsp;&amp;nbsp;On October 31, 2012, the borrowing base was increased from $&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;200.0&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million to $&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;425.0&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million. We recently completed our semi-annual redetermination and our borrowing base remains at $&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;425.0&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million. In addition, in July 2013, our Senior Credit Facility was amended to increase the limit applicable to certain restricted payments permitted by the agreement.&amp;nbsp;&amp;nbsp;As of June 30, 2013 and December 31, 2012, we had outstanding under the Senior Credit Facility $&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;165.0&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;&amp;nbsp;&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;million and $&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;195.0&lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt; million, &lt;/font&gt;&lt;font style="display: inline;font-size:10pt;"&gt;respectively.&amp;nbsp;&amp;nbsp;For additional information regarding our Senior Credit Facility, see Note 7, &amp;#x201C;Indebtedness,&amp;#x201D; of our 2012 Annual Report. &lt;/font&gt;
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