Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements of Operations
Net sales	$ 706,329	$ 657,236	$ 603,446
Cost of sales	391,791	373,759	332,642
Gross profit	314,538	283,477	270,804
Operating expenses:
Research and development and other engineering	36,843	35,919	25,886
Selling	85,102	82,364	73,568
General and administrative	109,077	100,973	95,820
Impairment of Goodwill		2,346	1,282
Net loss on disposal of assets	2,038	166	191
Total operating expenses	233,060	221,768	196,747
Income from operations	81,478	61,709	74,057
Income in equity method investment, before tax			4,389
Interest income	987	1,005	913
Interest expense	(901)	(793)	(573)
Income before taxes	81,564	61,921	78,786
Provision for income taxes	30,593	20,003	27,886
Net income	$ 50,971	$ 41,918	$ 50,900
Earnings per common share:
Basic (in dollars per share)	$ 1.05	$ 0.87	$ 1.04
Diluted (in dollars per share)	$ 1.05	$ 0.87	$ 1.04
Weighted average number of shares outstanding
Basic (in shares)	48,521	48,339	48,974
Diluted (in shares)	48,673	48,412	49,023

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use; (3) to conduct internal product testing; (4) or to provide engineering support to customers in the form of testing services or product uses, specifications or requirements.

No definition available.