Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2017	May 01, 2016
Net sales	$ 143,802	$ 131,145
Cost of sales	58,887	52,621
Gross profit	84,915	78,524
Operating costs and expenses:
Selling, general and administrative	33,586	33,715
Product development and engineering	25,983	25,172
Intangible amortization	6,286	6,403
Loss on disposition of business operations	375	0
Changes in the fair value of contingent earn-out obligations	0	(33)
Restructuring charges	429	0
Total operating costs and expenses	66,659	65,257
Operating income	18,256	13,267
Interest expense, net	(2,046)	(1,930)
Non-operating expense, net	(632)	(45)
Income before taxes	15,578	11,292
Provision for taxes	3,757	4,405
Net income	$ 11,821	$ 6,887
Earnings per share:
Basic (in dollars per share)	$ 0.18	$ 0.11
Diluted (in dollars per share)	$ 0.18	$ 0.11
Weighted average number of shares used in computing earnings per share:
Basic (in shares)	65,839	65,144
Diluted (in shares)	67,376	65,552