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Reclamation Bond Deposit | 12 Months Ended
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Dec. 31, 2012
Reclamation Bond Deposit [Abstract] |
Reclamation Bond Deposit | 10. Reclamation Bond Deposit We are required to mitigate long-term environmental impacts by stabilizing, contouring, resloping, and revegetating various portions of a site after mining and mineral processing operations are completed. These reclamation efforts are conducted in accordance with plans reviewed and approved by the appropriate regulatory agencies. The Nevada Revised Statutes and regulations promulgated by the Nevada State Environmental Commission and the Nevada Division of Environmental Protection, Bureau of Mining and Reclamation require a surety bond to be posted for mining projects that leave the site safe, stable and capable of providing for a productive post-mining land use. The Nevada State Environmental Commission and Division of Environmental Protection have approved our most recent reclamation plan, as revised, of $4,666,091 and we have posted a surety for this amount. The reclamation bond deposit represents the required cash collateral and other required bond deposits of approximately $2.5 million and $722,000 at December 31, 2012 and 2011, respectively. In July 2012, the Company placed a $4.67 million reclamation surety bond through the Lexon Surety Group ("Lexon") with the State of Nevada's Bureau of Mining Regulation Reclamation ("BMRR"). The bond insures for the estimated costs required to safely reclaim the natural environment to the regulatory standards established by the State of Nevada's Division of Environmental Protection with the purposes of ensuring public safety, protecting the waters of the state, and providing for post mining land use. As part of the surety agreement, the Company agreed to pay a 2.5% annual bonding fee. The cash collateral due to Lexon is approximately $2.3 million and will be paid in installments over the next two years. At December 31, 2012, accrued expenses included approximately $1.4 million and other liabilities included approximately $700,000 remaining due to Lexon for the cash collateral.

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- Definition The entire disclosure for environmental loss contingencies, such as presence of hazardous waste, relevant information from reports issued by regulators, and estimated costs to achieve compliance with regulatory requirements. This element may be used for all of an entity's disclosures about environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13185-110859 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13237-110859 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.Y.Q2) -URI http://asc.fasb.org/extlink&oid=6572457&loc=d3e149879-122751 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section Y Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13328-110859 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 96-1 -Paragraph 152, 163, 172 -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. + Details
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