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Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Sales of products | $ 104,941 | $ 135,507 | $ 328,230 | $ 378,796
Cost of sales and other direct production costs | 79,273 | 86,680 | 220,805 | 235,460
Depreciation, depletion and amortization | 28,229 | 26,804 | 80,649 | 80,342
| 107,502 | 113,484 | 301,454 | 315,802
Gross profit (loss) | (2,561) | 22,023 | 26,776 | 62,994
Other operating expenses: |  |  |  |
General and administrative | 9,461 | 7,884 | 26,477 | 23,984
Exploration | 5,540 | 5,797 | 14,748 | 13,086
Pre-development | 1,696 | 391 | 3,834 | 1,247
Other operating expense | 743 | 442 | 2,137 | 1,853
Provision for closed operations and reclamation | 1,181 | 1,238 | 10,983 | 3,609
Acquisition costs | 15 |  | 2,162 |
| 18,636 | 15,752 | 60,341 | 43,779
Income (loss) from operations | (21,197) | 6,271 | (33,565) | 19,215
Other income (expense): |  |  |  |
Gain (loss) on derivative contracts | 3,347 | (411) | 8,252 | (2,560)
Unrealized loss on investments | (100) | (2,830) | (3,226) | (2,750)
Foreign exchange gain | 9,077 | 7,299 | 19,518 | 6,051
Interest and other income | 100 | 32 | 173 | 208
Interest expense, net of amount capitalized | (6,617) | (6,505) | (19,350) | (20,307)
| 5,807 | (2,415) | 5,367 | (19,358)
Income (loss) before income taxes | (15,390) | 3,856 | (28,198) | (143)
Income tax benefit (provision) | 5,500 | (180) | 4,193 | 1,062
Net income (loss) | (9,890) | 3,676 | (24,005) | 919
Reclassification of loss on disposition or impairment of marketable securities included in net income (loss) |  | 2,425 | 2,993 | 2,425
Defined benefit pension plan costs |  |  |  | (1,192)
Unrealized holding gains (losses) on investments | (391) | (149) | (2,603) | 205
Preferred stock dividends | (138) | (138) | (414) | (414)
Income (loss) applicable to common shareholders | (10,028) | 3,538 | (24,419) | 505
Comprehensive income (loss): |  |  |  |
Net income (loss) | (9,890) | 3,676 | (24,005) | 919
Comprehensive income (loss) | $ (10,281) | $ 5,952 | $ (23,615) | $ 2,357
Basic income (loss) per common share after preferred dividends (in Dollars per share) | $ (0.03) | $ 0.01 | $ (0.07) |
Diluted income (loss) per common share after preferred dividends (in Dollars per share) | $ (0.03) | $ 0.01 | $ (0.07) |
Weighted average number of common shares outstanding - basic (in Shares) | 377,508 | 359,472 | 372,555 | 348,801
Weighted average number of common shares outstanding - diluted (in Shares) | 377,508 | 362,262 | 372,555 | 354,673
Cash dividends declared per common share (in Dollars per share) | $ 0.0025 | $ 0.0025 | $ 0.0075 | $ 0.0075

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- Definition Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e689-108580 + Details
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