Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013
Income Statement [Abstract]
Net Sales	$ 68,592	$ 61,224
Cost of Sales	41,609	37,496
Gross Profit	26,983	23,728
Costs and Expenses:
Selling and Marketing	14,774	12,412
Research and Development	5,072	3,816
General and Administrative	5,604	4,574
Operating Expenses	25,450	20,802
Operating Income	1,533	2,926
Other Income (Expense):
Investment Income	72	55
Other, Net	(193)	(96)
Other Income (Expense)	(121)	(41)
Income from Continuing Operations before Income Taxes	1,412	2,885
Income Tax Provision for Continuing Operations	175	847
Income from Continuing Operations	1,237	2,038
Income from Discontinued Operations, net of taxes of $777 in 2014 and $5,351 in 2013	1,975	8,729
Net Income	$ 3,212	$ 10,767
Net Income per Common Share-Basic:
From Continuing Operations	$ 0.17	$ 0.28
From Discontinued Operations	$ 0.26	$ 1.18
Net Income Per Common Share-Basic	$ 0.43	$ 1.46
Net Income per Common Share-Diluted:
From Continuing Operations	$ 0.16	$ 0.27
From Discontinued Operations	$ 0.26	$ 1.17
Net Income Per Common Share-Diluted	$ 0.42	$ 1.44
Weighted Average Number of Common Shares Outstanding-Basic	7,470	7,396
Dilutive effect of options outstanding	227	87
Weighted Average Number of Common Shares Outstanding-Diluted	7,697	7,483
Dividends Declared Per Common Share	$ 0.28	$ 0.35