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Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2012 | Mar. 31, 2011
Net sales | $ 158,734 | $ 132,536
Cost of sales | 89,329 | 75,588
Gross profit | 69,405 | 56,948
Operating expenses: |  |
Research and development and other engineering | 9,198 | 5,994
Selling | 20,432 | 17,075
General and administrative | 26,244 | 21,621
Loss (gain) on sale of assets | 23 | (25)
Total operating expenses | 55,897 | 44,665
Income from operations | 13,508 | 12,283
Loss in equity method investment, before tax |  | (14)
Interest income, net | 65 | 72
Income before taxes | 13,573 | 12,341
Provision for income taxes | 6,372 | 5,263
Net income | $ 7,201 | $ 7,078
Earnings per common share: |  |
Basic (in dollars per share) | $ 0.15 | $ 0.14
Diluted (in dollars per share) | $ 0.15 | $ 0.14
Number of shares outstanding |  |
Basic (in shares) | 48,273 | 50,107
Diluted (in shares) | 48,337 | 50,165
Cash dividends declared per common share (in dollars per share) | $ 0.125 | $ 0.125

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