2.4.0.8102 - Disclosure - Inventories, Stockpiles and Mineralized Material on Leach Padtruefalsefalse1false falsefalsefrom-2013-01-01-to-2013-06-30.363.0.0.0.0.0.0.0http://www.sec.gov/CIK0001120970duration2013-01-01T00:00:002013-06-30T00:00:001true 1us-gaap_InventoryDisclosureAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Inventories, Stockpiles and Mineralized Material on Leach Pad [Abstract]2false 2us-gaap_InventoryDisclosureTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div> <div> <p style="FONT: 10pt Times New Roman, Times, Serif; MARGIN: 0pt 0px"> <strong>2. Inventories, Stockpiles and Mineralized Material on Leach Pad</strong></p> <p style="FONT: 10pt Times New Roman, Times, Serif; MARGIN: 0pt 0px"> <strong> </strong></p> <p style="FONT: 10pt Times New Roman, Times, Serif; MARGIN: 0pt 0px; TEXT-INDENT: 0.5in"> Inventories, stockpiles and mineralized materials on leach pads consisted of the following:</p> <p style="FONT: 10pt Times New Roman, Times, Serif; MARGIN: 0pt 0px; TEXT-INDENT: 0.5in">  </p> <table style="BORDER-COLLAPSE: collapse; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 100%" cellspacing="0" cellpadding="0"> <tr style="VERTICAL-ALIGN: bottom"> <td style="FONT-SIZE: 10pt"> </td> <td style="FONT-SIZE: 10pt; FONT-WEIGHT: bold"> </td> <td style="FONT-SIZE: 10pt; FONT-WEIGHT: bold; TEXT-ALIGN: center" colspan="2">June 30,</td> <td style="FONT-SIZE: 10pt; FONT-WEIGHT: bold"> </td> <td style="FONT-SIZE: 10pt; FONT-WEIGHT: bold"> </td> <td style="FONT-SIZE: 10pt; FONT-WEIGHT: bold" colspan="2">December 31,</td> <td style="FONT-SIZE: 10pt; FONT-WEIGHT: bold"> </td> </tr> <tr style="VERTICAL-ALIGN: bottom"> <td style="FONT-SIZE: 10pt"> </td> <td style="FONT-SIZE: 10pt; FONT-WEIGHT: bold; PADDING-BOTTOM: 1pt">  </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 1pt solid; FONT-WEIGHT: bold; TEXT-ALIGN: center" colspan="2">2013</td> <td style="FONT-SIZE: 10pt; FONT-WEIGHT: bold; PADDING-BOTTOM: 1pt">  </td> <td style="FONT-SIZE: 10pt; FONT-WEIGHT: bold; PADDING-BOTTOM: 1pt">  </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 1pt solid; FONT-WEIGHT: bold; TEXT-ALIGN: center" colspan="2">2012</td> <td style="FONT-SIZE: 10pt; FONT-WEIGHT: bold; PADDING-BOTTOM: 1pt">  </td> </tr> <tr style="VERTICAL-ALIGN: bottom; BACKGROUND-COLOR: rgb(204,255,204)"> <td style="FONT-SIZE: 10pt; WIDTH: 72%">  In-process</td> <td style="FONT-SIZE: 10pt; WIDTH: 2%"> </td> <td style="FONT-SIZE: 10pt; TEXT-ALIGN: left; WIDTH: 1%">$</td> <td style="FONT-SIZE: 10pt; TEXT-ALIGN: right; WIDTH: 10%"> 421,757</td> <td style="FONT-SIZE: 10pt; TEXT-ALIGN: left; WIDTH: 1%">  </td> <td style="FONT-SIZE: 10pt; WIDTH: 2%"> </td> <td style="FONT-SIZE: 10pt; TEXT-ALIGN: left; WIDTH: 1%">$</td> <td style="FONT-SIZE: 10pt; TEXT-ALIGN: right; WIDTH: 10%"> 662,929</td> <td style="FONT-SIZE: 10pt; TEXT-ALIGN: left; WIDTH: 1%">  </td> </tr> <tr style="VERTICAL-ALIGN: bottom; BACKGROUND-COLOR: white"> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt; TEXT-ALIGN: left">   Finished goods</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt"> </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 1pt solid; TEXT-ALIGN: left">  </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 1pt solid; TEXT-ALIGN: right"> 208,006</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt; TEXT-ALIGN: left">  </td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt"> </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 1pt solid; TEXT-ALIGN: left">  </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 1pt solid; TEXT-ALIGN: right"> -</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt; TEXT-ALIGN: left">  </td> </tr> <tr style="VERTICAL-ALIGN: bottom; BACKGROUND-COLOR: rgb(204,255,204)"> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left"> Total inventories</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt"> </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 2.5pt double; TEXT-ALIGN: left"> $</td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 2.5pt double; TEXT-ALIGN: right"> 629,763</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left">  </td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt"> </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 2.5pt double; TEXT-ALIGN: left"> $</td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 2.5pt double; TEXT-ALIGN: right"> 662,929</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left">  </td> </tr> <tr style="VERTICAL-ALIGN: bottom; BACKGROUND-COLOR: white"> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt"> </td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt"> </td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt; TEXT-ALIGN: left">  </td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt; TEXT-ALIGN: right">  </td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt; TEXT-ALIGN: left">  </td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt"> </td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt; TEXT-ALIGN: left">  </td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt; TEXT-ALIGN: right">  </td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt; TEXT-ALIGN: left">  </td> </tr> <tr style="VERTICAL-ALIGN: bottom; BACKGROUND-COLOR: rgb(204,255,204)"> <td style="FONT-SIZE: 10pt">  Stockpiles</td> <td style="FONT-SIZE: 10pt"> </td> <td style="FONT-SIZE: 10pt; TEXT-ALIGN: left">$</td> <td style="FONT-SIZE: 10pt; TEXT-ALIGN: right">322,793</td> <td style="FONT-SIZE: 10pt; TEXT-ALIGN: left"> </td> <td style="FONT-SIZE: 10pt"> </td> <td style="FONT-SIZE: 10pt; TEXT-ALIGN: left">$</td> <td style="FONT-SIZE: 10pt; TEXT-ALIGN: right">361,061</td> <td style="FONT-SIZE: 10pt; TEXT-ALIGN: left"> </td> </tr> <tr style="VERTICAL-ALIGN: bottom; BACKGROUND-COLOR: white"> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt; TEXT-ALIGN: left">   Mineralized material on leach pad</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt"> </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 1pt solid; TEXT-ALIGN: left">  </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 1pt solid; TEXT-ALIGN: right"> 3,394,314</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt; TEXT-ALIGN: left">  </td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt"> </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 1pt solid; TEXT-ALIGN: left">  </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 1pt solid; TEXT-ALIGN: right"> 3,919,603</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 1pt; TEXT-ALIGN: left">  </td> </tr> <tr style="VERTICAL-ALIGN: bottom; BACKGROUND-COLOR: rgb(204,255,204)"> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left"> Total stockpiles and mineralized material on leach pad</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt"> </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 2.5pt double; TEXT-ALIGN: left"> $</td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 2.5pt double; TEXT-ALIGN: right"> 3,717,107</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left">  </td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt"> </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 2.5pt double; TEXT-ALIGN: left"> $</td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 2.5pt double; TEXT-ALIGN: right"> 4,280,664</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left">  </td> </tr> <tr style="VERTICAL-ALIGN: bottom; BACKGROUND-COLOR: white"> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt">Total</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt"> </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 2.5pt double; TEXT-ALIGN: left"> $</td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 2.5pt double; TEXT-ALIGN: right"> 4,346,870</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left">  </td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt"> </td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 2.5pt double; TEXT-ALIGN: left"> $</td> <td style="FONT-SIZE: 10pt; BORDER-BOTTOM: black 2.5pt double; TEXT-ALIGN: right"> 4,943,593</td> <td style="FONT-SIZE: 10pt; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left">  </td> </tr> </table> <p style="COLOR: red; FONT: 10pt Times New Roman, Times, Serif; MARGIN: 0pt 0px">  </p> <p style="FONT: 10pt Times New Roman, Times, Serif; MARGIN: 0pt 0px; TEXT-INDENT: 0.5in"> During the three and six months ended June 30, 2013, the Company wrote down inventories by $116,923 and stockpiles and mineralized material on leach pad by $869,677 to record the balances to net realizable value (NRV). The NRV represents the estimated future sales price based on short-term and long-term metals prices, less estimated costs to complete production and bring the product to sale. The primary factor that influenced the need to record the write-downs was recent market declines in gold prices. The write downs of the inventory balances are included in costs applicable to mining revenue in the condensed consolidated statement of operations for the three and six months ended June 30, 2013.</p> </div> </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 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 3: 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 false0Inventories, Stockpiles and Mineralized Material on Leach PadfalseInventories, Stockpiles and Mineralized Material on Leach PadUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.comstockmining.com/role/InventoriesStockpilesAndMineralizedMaterialOnLeachPad12