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Consolidated Statements of Operations and Comprehensive Income (USD $) Share data in Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Sales of products | $ 477,634,000 | $ 418,813,000 | $ 312,548,000
Cost of sales and other direct production costs | 165,573,000 | 163,983,000 | 148,642,000
Depreciation, depletion and amortization | 47,066,000 | 60,011,000 | 62,837,000
Total cost of sales | 212,639,000 | 223,994,000 | 211,479,000
Gross profit | 264,995,000 | 194,819,000 | 101,069,000
Other operating expenses: |  |  |
General and administrative | 18,540,000 | 18,219,000 | 18,624,000
Exploration | 26,959,000 | 21,605,000 | 9,247,000
Pre-development | 4,446,000 |  |
Other operating expense | 7,658,000 | 5,334,000 | 5,389,000
Loss (gain) on disposition of property, plants, equipment and mineral interests |  | 80,000 | (6,234,000)
Termination of employee benefit plan |  |  | (8,950,000)
Provision for closed operations and environmental matters | 9,747,000 | 201,136,000 | 7,721,000
Total other operating expense | 67,350,000 | 246,374,000 | 25,797,000
Income (loss) from operations | 197,645,000 | (51,555,000) | 75,272,000
Other income (expense): |  |  |
Gain (loss) on derivative contracts | 37,988,000 | (20,758,000) |
Net gain on sale of investments | 611,000 | 588,000 | 4,070,000
Loss on impairment of investments | (140,000) | (739,000) | (3,018,000)
Interest and other income (expense) | (87,000) | 126,000 | 1,121,000
Debt-related fees |  |  | (5,973,000)
Interest expense | (2,875,000) | (2,211,000) | (11,326,000)
Total other income (expense): | 35,497,000 | (22,994,000) | (15,126,000)
Income (loss) before income taxes | 233,142,000 | (74,549,000) | 60,146,000
Income tax benefit (provision) | (81,978,000) | 123,532,000 | 7,680,000
Net income | 151,164,000 | 48,983,000 | 67,826,000
Unrealized gain (loss) and amortization of prior service on pension plans | (7,754,000) | (1,653,000) | 6,006,000
Change in fair value of derivative contracts |  |  | 1,967,000
Unrealized holding gains (losses) on investments | (767,000) | (21,000) | 3,498,000
Reclassification of net gain on sale or impairment of investments included in net income | 140,000 | 739,000 | (632,000)
Comprehensive income | 142,783,000 | 48,048,000 | 78,665,000
Basic income per common share after preferred dividends (in Dollars per share) | $ 0.54 | $ 0.14 | $ 0.24
Diluted income per common share after preferred dividends (in Dollars per share) | $ 0.51 | $ 0.13 | $ 0.23
Weighted average number of common shares outstanding – basic (in Shares) | 280,956 | 251,146 | 224,933
Weighted average number of common shares outstanding – diluted (in Shares) | 297,033 | 269,601 | 233,618
Preferred stock dividends | (552,000) | (13,633,000) | (13,633,000)
Income applicable to common shareholders | $ 150,612,000 | $ 35,350,000 | $ 54,193,000

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