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Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Condensed Consolidated Statements of Comprehensive Income (Unaudited) [Abstract] |  |
Net sales | $ 342,008 | $ 399,572
Costs of goods sold | 222,494 | 246,110
Gross profit | 119,514 | 153,462
Operating expenses: |  |
Selling and service | 27,969 | 31,681
Research and development | 7,746 | 6,645
General and administrative | 13,148 | 12,426
Amortization of intangibles | 5,345 | 6,185
Total operating expenses | 54,208 | 56,937
Income from operations | 65,306 | 96,525
Other (expense) income: |  |
Interest expense | (11,689) | (15,675)
Investment income | 39 | 17
Loss on extinguishment of debt | 0 | (1,839)
Other, net | 568 | 396
Total other expense, net | (11,082) | (17,101)
Income before provision for income taxes | 54,224 | 79,424
Provision for income taxes | 19,523 | 28,750
Net income | 34,701 | 50,674
Net income per common share - basic: (in dollars per share) | $ 0.51 | $ 0.75
Weighted average common shares outstanding - basic: (in shares) | 68,421,800 | 67,864,475
Net income per common share - diluted: (in dollars per share) | $ 0.50 | $ 0.73
Weighted average common shares outstanding - diluted: (in shares) | 70,008,490 | 69,554,941
Comprehensive income | $ 34,272 | $ 51,676

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