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Consolidated Statements of Operations and Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Sales of products | $ 321,143 | $ 477,634 | $ 418,813
Cost of sales and other direct production costs | 134,105 | 165,573 | 163,983
Depreciation, depletion and amortization | 43,522 | 47,066 | 60,011
Total cost of sales | 177,627 | 212,639 | 223,994
Gross profit | 143,516 | 264,995 | 194,819
Other operating expenses: |  |  |
General and administrative | 21,253 | 18,540 | 18,219
Exploration | 31,822 | 26,959 | 21,605
Pre-development | 17,916 | 4,446 |
Other operating expense | 4,423 | 7,658 | 5,334
Loss on disposition of property, plants, equipment and mineral interests | 275 |  | 80
Lucky Friday suspension-related costs | 25,309 |  |
Provision for closed operations and environmental matters | 4,652 | 9,747 | 201,136
Total other operating expense | 105,650 | 67,350 | 246,374
Income (loss) from operations | 37,866 | 197,645 | (51,555)
Other income (expense): |  |  |
Gain (loss) on derivative contracts | (10,457) | 37,988 | (20,758)
Net gain on sale of investments |  | 611 | 588
Loss on impairment of investments | (1,171) | (140) | (739)
Interest and other income (expense) | 22 | (87) | 126
Interest expense | (2,427) | (2,875) | (2,211)
Total other income (expense): | (14,033) | 35,497 | (22,994)
Income (loss) before income taxes | 23,833 | 233,142 | (74,549)
Income tax benefit (provision) | (8,879) | (81,978) | 123,532
Net income | 14,954 | 151,164 | 48,983
Unrealized gain (loss) and amortization of prior service on pension plans | (1,644) | (7,754) | (1,653)
Unrealized holding gains (losses) on investments | 53 | (767) | (21)
Reclassification of impairment of investments included in net income | 1,171 | 140 | 739
Total change in accumulated other comprehensive loss, net | (420) | (8,381) | (935)
Comprehensive income | 14,534 | 142,783 | 48,048
Basic income per common share after preferred dividends (in Dollars per share) | $ 0.05 | $ 0.54 | $ 0.14
Diluted income per common share after preferred dividends (in Dollars per share) | $ 0.05 | $ 0.51 | $ 0.13
Weighted average number of common shares outstanding – basic (in Shares) | 285,375 | 280,956 | 251,146
Weighted average number of common shares outstanding – diluted (in Shares) | 297,566 | 297,033 | 269,601
Preferred stock dividends | (552) | (552) | (13,633)
Income applicable to common shareholders | $ 14,402 | $ 150,612 | $ 35,350

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 07-4 -Paragraph 4 -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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 -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 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 + Details
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