EARNINGS PER SHARE COMPUTATIONS (Details) (USD $)	3 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
Numerator [Abstract]
Net income	$ 230,255	$ 1,258,698
Denominator [Abstract]
Weighted average common shares outstanding during the period for basic computation (in shares)	14,697,269	14,678,628
Dilutive effect of stock-based compensation plans (in shares)	157,637	66,198
Weighted average common shares outstanding during the period for diluted computation (in shares)	14,854,906	14,744,826
Earnings per share, basic (in dollars per share)	$ 0.02	$ 0.09
Earnings per share, diluted (in dollars per share)	$ 0.02	$ 0.09
Employee stock options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the computation of diluted earnings per share (in shares)	0	669,009