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Consolidated Statement of Income Statement (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Net sales | $ 1,272,910 | $ 1,083,960 | $ 902,460
Cost of sales | (929,150) | (766,260) | (631,410)
Gross profit | 343,760 | 317,700 | 271,050
Selling, general and administrative expenses | (216,170) | (186,520) | (160,190)
Net gain (loss) on dispositions of property and equipment | 280 | 140 | (1,520)
Operating profit | 127,870 | 131,320 | 109,340
Other expense, net: |  |  |
Interest expense | (35,800) | (44,480) | (51,830)
Debt extinguishment costs | (46,810) | (3,970) | 0
Other expense, net | (3,000) | (3,130) | (1,080)
Other expense, net | (85,610) | (51,580) | (52,910)
Income from continuing operations before income tax expense | 42,260 | 79,740 | 56,430
Income tax expense | (5,970) | (28,930) | (17,500)
Income from continuing operations | 36,290 | 50,810 | 38,930
Income from discontinued operations, net of income taxes | 0 | 9,550 | 6,340
Net income | 36,290 | 60,360 | 45,270
Net income attributable to noncontrolling interest | 2,410 | 0 | 0
Net income attributable to TriMas Corporation | $ 33,880 | $ 60,360 | $ 45,270
Basic earnings per share attributable to TriMas Corporation: |  |  |
Continuing operations | $ 0.90 | $ 1.48 | $ 1.15
Discontinued operations | $ 0.00 | $ 0.28 | $ 0.19
Net income per share | $ 0.90 | $ 1.76 | $ 1.34
Weighted average common shares—basic | 37,520,935 | 34,246,289 | 33,761,430
Diluted earnings per share attributable to TriMas Corporation: |  |  |
Continuing operations | $ 0.89 | $ 1.46 | $ 1.13
Discontinued operations | $ 0.00 | $ 0.27 | $ 0.18
Net income per share | $ 0.89 | $ 1.73 | $ 1.31
Weighted average common shares—diluted | 37,949,021 | 34,779,693 | 34,435,245

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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 2 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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