2.4.0.81030 - Disclosure - Inventoriestruefalsefalse1false falsefalseD2013Q2YTDhttp://www.sec.gov/CIK0001441849duration2013-01-01T00:00:002013-06-30T00:00:001true 1us-gaap_InventoryDisclosureAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Inventories2false 2us-gaap_InventoryDisclosureTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div style="font-size:10.0pt;font-family:Times New Roman;FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;"> 3.  Inventories   Inventories, net, consisted of the following (in thousands):   <table style="text-align:left;TEXT-ALIGN: left; WIDTH: 597px; BORDER-COLLAPSE: collapse; MARGIN-LEFT: 0.5in;" border="0" cellspacing="0" cellpadding="0" width="597"> <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%">  </td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">  </td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.84%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="2"> June 30,</td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">  </td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.84%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="2"> December 31,</td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="1%">  </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%">  </td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">  </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"> 2013 </td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">  </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"> 2012</td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="1%">  </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%"> Materials and supplies</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%">  </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%"> $</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%">   79,423 </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%">  </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%"> $</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%">   76,989</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%">  </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%"> Less: Obsolescence allowance</td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">  </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">  (1,052</td> <td style="PADDING-BOTTOM: 0.375pt; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> )</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">  (834</td> <td style="PADDING-BOTTOM: 0.375pt; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="1%"> )</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%"> Material and supplies, net</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%">  </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">  78,371 </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%">  </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">  76,155</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%">  </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%"> Coal inventory</td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">  </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">  4,287 </td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%">  </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">  5,519</td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="1%">  </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%"> Inventories, net</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%">  </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%"> $</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%">   82,659 </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%">  </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%"> $</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%">   81,675</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%">  </td></tr></table></div>falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section A -Paragraph 9 -Chapter 3 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a, b, c -Article 5 false0InventoriesfalseInventoriesUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.cloudpeakenergy.com/role/DisclosureInventories12