CONSOLIDATED STATEMENT OF INCOME (unaudited) (USD $)	3 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
CONSOLIDATED STATEMENT OF INCOME (unaudited) [Abstract]
Net sales	$ 21,967,876	$ 25,207,061
Cost of goods sold	13,956,466	16,256,535
Gross profit	8,011,410	8,950,526
Selling	2,717,246	3,059,581
General and administrative	3,019,415	4,144,089
Total selling, general and administrative	5,736,661	7,203,670
Acquisition expenses	1,392,819	0
Income from operations	881,930	1,746,856
Interest expense	(36,417)	(42,535)
Other (expense) income	(9,311)	45,925
Income before taxes	836,202	1,750,246
Provision for taxes	605,947	491,548
Net income	$ 230,255	$ 1,258,698
Earnings per share, basic (in dollars per share)	$ 0.02	$ 0.09
Earnings per share, diluted (in dollars per share)	$ 0.02	$ 0.09
Cash dividend per share - declared (in dollars per share)	$ 0.0725	$ 0.071
Cash dividend per share - paid (in dollars per share)	$ 0.0725	$ 0.071