Nature of Operations, Segment Reporting and Geographical Information (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Summary of selected financial information by geographic area
Net Sales	$ 61,224	$ 60,724
Long-Lived Assets	7,788	8,213
United States [Member]
Summary of selected financial information by geographic area
Net Sales	44,613	43,570
Long-Lived Assets	6,741	7,073
Europe [Member]
Summary of selected financial information by geographic area
Net Sales	12,324	12,914
Long-Lived Assets	609	646
Canada [Member]
Summary of selected financial information by geographic area
Net Sales	2,136	2,074
Long-Lived Assets	438	494
Asia [Member]
Summary of selected financial information by geographic area
Net Sales	910	1,050
Central and South America [Member]
Summary of selected financial information by geographic area
Net Sales	752	610
Other [Member]
Summary of selected financial information by geographic area
Net Sales	$ 489	$ 506