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Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Condensed Consolidated Statements of Operations
Net sales	$ 154,535	$ 158,734
Cost of sales	89,561	89,329
Gross profit	64,974	69,405
Operating expenses:
Research and development and other engineering	8,308	9,198
Selling	21,371	20,432
General and administrative	26,290	26,244
Loss (gain) on sale of assets	(8)	23
Total operating expenses	55,961	55,897
Income from operations	9,013	13,508
Interest income, net	38	65
Income before taxes	9,051	13,573
Provision for income taxes	4,256	6,372
Net income	$ 4,795	$ 7,201
Earnings per common share:
Basic (in dollars per share)	$ 0.10	$ 0.15
Diluted (in dollars per share)	$ 0.10	$ 0.15
Number of shares outstanding
Basic (in shares)	48,536	48,273
Diluted (in shares)	48,626	48,337
Cash dividends declared per common share (in dollars per share)		$ 0.125

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