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Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011
Net sales | $ 181,703 | $ 177,812 | $ 340,437 | $ 310,348
Cost of sales | 98,557 | 94,313 | 187,886 | 169,900
Gross profit | 83,146 | 83,499 | 152,551 | 140,448
Operating expenses: |  |  |  |
Research and development and other engineering | 9,043 | 6,945 | 18,240 | 12,939
Selling | 19,881 | 19,819 | 40,314 | 36,895
General and administrative | 27,087 | 25,454 | 53,331 | 47,076
Loss (gain) on sale of assets | (13) | 73 | 10 | 48
Total operating expenses | 55,998 | 52,291 | 111,895 | 96,958
Income from operations | 27,148 | 31,208 | 40,656 | 43,490
Loss in equity method investment, before tax |  | (69) |  | (82)
Interest income, net | 58 | 108 | 123 | 179
Income before taxes | 27,206 | 31,247 | 40,779 | 43,587
Provision for income taxes | 11,347 | 11,754 | 17,719 | 17,016
Net income | $ 15,859 | $ 19,493 | $ 23,060 | $ 26,571
Earnings per common share: |  |  |  |
Basic (in dollars per share) | $ 0.33 | $ 0.39 | $ 0.48 | $ 0.53
Diluted (in dollars per share) | $ 0.33 | $ 0.39 | $ 0.48 | $ 0.53
Number of shares outstanding |  |  |  |
Basic (in shares) | 48,340 | 49,404 | 48,307 | 49,753
Diluted (in shares) | 48,419 | 49,456 | 48,378 | 49,809
Cash dividends declared per common share (in dollars per share) | $ 0.125 | $ 0.125 | $ 0.25 | $ 0.25

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