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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Net sales | $ 1,820,678 |  | $ 1,486,998 |  | $ 881,591 |
Cost of sales | 1,526,539 |  | 1,254,890 |  | 777,501 |
Gross profit | 294,139 |  | 232,108 |  | 104,090 |
Selling, general & administrative expenses | 126,157 |  | 85,917 |  | 57,565 |
Research and development expenses | 7,148 |  | 4,228 |  | 6,317 |
Royalty expense | 12,260 |  | 9,790 |  | 9,263 |
Supply agreement termination income | (26,134) |  | 0 |  | 0 |
Income from operations | 174,708 |  | 132,173 |  | 30,945 |
Interest expense | (27,658) |  | (25,259) |  | (26,667) |
Noncash convertible debt conversion charge | 0 |  | (16,135) |  | 0 |
Loss on senior note repurchase | 0 |  | 0 |  | (14,573) |
Noncash Titan Europe Plc gain | 26,700 |  | 0 |  | 0 |
Other income (expense) | 6,823 |  | 5,116 |  | 1,105 |
Income before income taxes | 180,573 |  | 95,895 |  | (9,190) |
Provision (benefit) for income taxes | 86,613 |  | 37,759 |  | (3,264) |
Net income (loss) | 93,960 |  | 58,136 |  | (5,926) |
Net loss attributable to noncontrolling interests | (1,593) |  | (16) |  | 0 |
Net income (loss) attributable to Titan | $ 95,553 |  | $ 58,152 |  | $ (5,926) | [1]
Earnings per common share: |  |  |  |  |  |
Basic (in dollars per share) | $ 2.20 | [2] | $ 1.40 | [2] | $ (0.17) |
Diluted (in dollars per share) | $ 1.83 | [2] | $ 1.18 | [1],[2] | $ (0.17) |
Average common shares outstanding: |  |  |  |  |  |
Basic (in shares) | 43,380 |  | 41,657 |  | 34,896 |
Diluted (in shares) | 54,662 |  | 53,144 | [1] | 34,896 |
Dividends declared per common share: | $ 0.02 |  | $ 0.02 |  | $ 0.02 |
[1] | The effect of stock options/trusts has been excluded as they were anti-dilutive. The weighted-average share amount excluded for stock options/trusts totaled 495,789 shares. The effect of convertible notes has not been included as they were anti-dilutive. The weighted-average share amount excluded for convertible notes totaled 16,764,701 shares.
[2] | As a result of changes in outstanding share balances and dilution factors, year-end per share amounts do not agree to the sum of the quarters.

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