Consolidated Statements of Stockholders' Equity (USD $)	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
Balance at Jan. 31, 2010	$ 1,665,000	$ 5,749,000	$ 3,469,000	$ (3,163,000)	$ 7,720,000
Balance (in shares) at Jan. 31, 2010	3,731,522
Net income	0	0	625,000	0	625,000
Directors' equity compensation	7,000	53,000	0	0	60,000
Directors' equity compensation (in shares)	16,950
Exercise of stock options	0	1,000	0	0	1,000
Exercise of stock options (in shares)	1,000
Warrants issued for short-term note	0	249,000	0	0	249,000
Stock-based compensation	0	180,000	0	0	180,000
Balance at Jan. 31, 2011	1,672,000	6,232,000	4,094,000	(3,163,000)	8,835,000
Balance (in shares) at Jan. 31, 2011	3,749,472
Net income	0	0	392,000	0	392,000
Directors' equity compensation	8,000	52,000	0	0	60,000
Directors' equity compensation (in shares)	19,851
Exercise of stock options	0	1,000	0	0	1,000
Exercise of stock options (in shares)	1,000
Stock-based compensation	0	127,000	0	0	127,000
Balance at Jan. 31, 2012	$ 1,680,000	$ 6,412,000	$ 4,486,000	$ (3,163,000)	$ 9,415,000
Balance (in shares) at Jan. 31, 2012	3,770,323