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Condensed Consolidated Statements of Income Unaudited - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2015	Oct. 31, 2014
Income Statement [Abstract]
Net sales	$ 64,981	$ 62,273	$ 149,100	$ 138,698
Costs of goods sold	41,771	41,601	93,701	89,300
Gross profit	23,210	20,672	55,399	49,398
Selling, general and administrative expenses	16,691	15,881	43,763	42,076
Gain on sale of property, plant & equipment	0	(2)	17	(2)
Restructuring expense	0	0	0	62
Operating income (loss)	6,519	4,793	11,619	7,262
Interest expense, net	379	393	1,129	1,227
Income (loss) before income taxes	6,140	4,400	10,490	6,035
Income tax expense (benefit)	137	(232)	214	55
Net income (loss)	$ 6,003	$ 4,632	$ 10,276	$ 5,980
Net income (loss) per common share:
Basic (usd per share)	$ 0.40	$ 0.31	$ 0.69	$ 0.41
Diluted (usd per share)	$ 0.39	$ 0.31	$ 0.67	$ 0.40
Weighted average shares outstanding:
Basic (shares)	14,971	14,824	14,895	14,747
Diluted (shares)	15,324	15,054	15,227	14,934

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