2.4.0.83030 - Disclosure - Inventories (Tables)truefalsefalse1false
falsefalseD2013Q2YTDhttp://www.sec.gov/CIK0001441849duration2013-01-01T00:00:002013-06-30T00:00:001true
1us-gaap_InventoryDisclosureAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse| 1falsefalsefalse00falsefalsefalse | xbrli:stringItemTypestringfalse0
2false
2us-gaap_ScheduleOfInventoryCurrentTableTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel| 1falsefalsefalse00<div style="font-size:10.0pt;font-family:Times New Roman;FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;">
<p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">Inventories, net, consisted of the following (in thousands):</font></p>
<p style="MARGIN: 0in 0in 0pt;"> </p>
<table style="text-align:left;TEXT-ALIGN: left; WIDTH: 594px; BORDER-COLLAPSE: collapse; MARGIN-LEFT: 0.5in;" border="0" cellspacing="0" cellpadding="0" width="594">
<tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;">
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 65.4%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="65%">
<p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"> </p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">
<p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.84%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="2">
<p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"><b><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold;" size="1">June 30,</font></b></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">
<p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.84%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="2">
<p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"><b><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold;" size="1">December 31,</font></b></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="1%">
<p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td></tr>
<tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;">
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 65.4%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="65%">
<p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"> </p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">
<p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td>
<td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.84%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="2">
<p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"><b><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold;" size="1">2013 </font></b></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">
<p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td>
<td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.84%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="2">
<p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"><b><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold;" size="1">2012</font></b></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="1%">
<p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td></tr>
<tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;">
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 65.4%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="65%">
<p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">Materials and supplies</font></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%">
<p style="MARGIN: 0in 0in 0pt;"> </p></td>
<td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="1%">
<p style="MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">$</font></p></td>
<td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12.54%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="12%">
<p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">  79,423 </font></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%">
<p style="MARGIN: 0in 0in 0pt;"> </p></td>
<td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="1%">
<p style="MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">$</font></p></td>
<td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12.54%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="12%">
<p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">  76,989</font></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="1%">
<p style="MARGIN: 0in 0in 0pt;"> </p></td></tr>
<tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;">
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 65.4%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="65%">
<p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">Less: Obsolescence allowance</font></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">
<p style="MARGIN: 0in 0in 0pt;"> </p></td>
<td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.84%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="2">
<p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"> (1,052</font></p></td>
<td style="PADDING-BOTTOM: 0.375pt; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">
<p style="MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">)</font></p></td>
<td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.84%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="2">
<p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"> (834</font></p></td>
<td style="PADDING-BOTTOM: 0.375pt; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="1%">
<p style="MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">)</font></p></td></tr>
<tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;">
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 65.4%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="65%">
<p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 20pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">Material and supplies, net</font></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%">
<p style="MARGIN: 0in 0in 0pt;"> </p></td>
<td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.84%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="13%" colspan="2">
<p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"> 78,371 </font></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%">
<p style="MARGIN: 0in 0in 0pt;"> </p></td>
<td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.84%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="13%" colspan="2">
<p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"> 76,155</font></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="1%">
<p style="MARGIN: 0in 0in 0pt;"> </p></td></tr>
<tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;">
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 65.4%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="65%">
<p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">Coal inventory</font></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">
<p style="MARGIN: 0in 0in 0pt;"> </p></td>
<td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.84%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="2">
<p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"> 4,287 </font></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">
<p style="MARGIN: 0in 0in 0pt;"> </p></td>
<td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.84%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="2">
<p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"> 5,519</font></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="1%">
<p style="MARGIN: 0in 0in 0pt;"> </p></td></tr>
<tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;">
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 65.4%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="65%">
<p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">Inventories, net</font></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%">
<p style="MARGIN: 0in 0in 0pt;"> </p></td>
<td style="BORDER-BOTTOM: windowtext 2.25pt double; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="1%">
<p style="MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">$</font></p></td>
<td style="BORDER-BOTTOM: windowtext 2.25pt double; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12.54%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="12%">
<p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">  82,659 </font></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%">
<p style="MARGIN: 0in 0in 0pt;"> </p></td>
<td style="BORDER-BOTTOM: windowtext 2.25pt double; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="1%">
<p style="MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">$</font></p></td>
<td style="BORDER-BOTTOM: windowtext 2.25pt double; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12.54%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="12%">
<p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">  81,675</font></p></td>
<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="1%">
<p style="MARGIN: 0in 0in 0pt;"> </p></td></tr></table></div>falsefalsefalse | nonnum:textBlockItemTypenaTabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 2
-Paragraph 6
-Subparagraph a,b,c
-Article 5
false0
falseInventories (Tables)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.cloudpeakenergy.com/role/DisclosureInventoriesTables12