Stockholders' Equity (Details 1) (USD $)	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Beginning options outstanding, shares	339,200	320,200
Options granted, Shares	0	22,000
Options exercised, Shares	(3,300)	(1,000)
Options expired, cancelled or forfeited, Shares	(5,800)	(2,000)
Ending options outstanding, Shares	330,100	339,200
Options exercisable at January 31, Shares	315,400	250,000
Beginning options outstanding, Weighted Average Exercise Price	$ 2.83	$ 2.83
Options granted, Weighted Average Exercise Price	$ 0	$ 2.86
Options exercised, Weighted Average Exercise Price	$ 1.32	$ 1.01
Options expired, cancelled or forfeited, Weighted Average Exercise Price	$ 1.88	$ 1.87
Ending options outstanding, Weighted Average Exercise Price	$ 2.87	$ 2.83
Options exercisable at January 31, Weighted Average Exercise Price	$ 2.87	$ 3.09
Ending options outstanding, Weighted Average Remaining Contractual Life (in years)	5 years 9 months 15 days	6 years 9 months 22 days
Options exercisable at January 31, Weighted Average Remaining Contractual Life (in years)	5 years 8 months 5 days	6 years 6 months 15 days