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Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Sales of products | $ 85,330 | $ 67,019 | $ 161,780 | $ 158,172
Cost of sales and other direct production costs | 60,008 | 33,172 | 96,833 | 66,462
Depreciation, depletion and amortization | 20,211 | 9,879 | 34,218 | 19,540
| 80,219 | 43,051 | 131,051 | 86,002
Gross profit | 5,111 | 23,968 | 30,729 | 72,170
Other operating expenses: |  |  |  |
General and administrative | 7,482 | 5,527 | 14,421 | 10,028
Exploration | 6,221 | 7,146 | 12,714 | 12,757
Pre-development | 4,512 | 3,471 | 9,303 | 6,837
Other operating expense | 205 | 1,605 | 1,229 | 2,549
Provision for closed operations and environmental matters | 1,845 | 2,235 | 3,639 | 4,413
Lucky Friday suspension-related (income) expense | (2,840) | 6,465 | (1,342) | 12,631
Aurizon acquisition costs | 20,308 |  | 25,600 |
| 37,733 | 26,449 | 65,564 | 49,215
Income (loss) from operations | (32,622) | (2,481) | (34,835) | 22,955
Other income (expense): |  |  |  |
Gain on sale of investments | 197 |  | 197 |
Gain on derivative contracts | 6,541 | 6,171 | 28,080 | 940
Interest and other income | 685 | 32 | 572 | 181
Interest expense, net of amount capitalized | (6,454) | (505) | (7,158) | (972)
| 969 | 5,698 | 21,691 | 149
Income (loss) before income taxes | (31,653) | 3,217 | (13,144) | 23,104
Income tax benefit (provision) | 6,795 | (693) | (620) | (8,008)
Net income (loss) | (24,858) | 2,524 | (13,764) | 15,096
Preferred stock dividends | (138) | (138) | (276) | (276)
Income (loss) applicable to common shareholders | (24,996) | 2,386 | (14,040) | 14,820
Net income (loss) | (24,858) | 2,524 | (13,764) | 15,096
Reclassification of net gain on sale of marketable securities included in net income | (197) |  | (197) |
Unrealized holding losses on investments | (1,747) | (586) | (4,578) | (805)
Comprehensive income (loss) | $ (26,802) | $ 1,938 | $ (18,539) | $ 14,291
Basic income (loss) per common share after preferred dividends (in Dollars per share) | $ (0.08) | $ 0.01 | $ (0.05) | $ 0.05
Diluted income (loss) per common share after preferred dividends (in Dollars per share) | $ (0.08) | $ 0.01 | $ (0.05) | $ 0.05
Weighted average number of common shares outstanding - basic (in Shares) | 303,566 | 285,312 | 294,317 | 285,303
Weighted average number of common shares outstanding - diluted (in Shares) | 303,566 | 295,160 | 294,317 | 296,100
Cash dividends declared per common share (in Dollars per share) | $ 0.0025 | $ 0.0225 | $ 0.0050 | $ 0.0350

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