EMPLOYEE BENEFIT PLANS (Details) (USD $)	3 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
Components of net periodic pension (income) cost [Abstract]
Service cost	$ 45,500	$ 56,035
Interest cost	264,675	272,218
Expected return on plan assets	(336,793)	(304,822)
Recognized net actuarial loss	113,643	109,991
Net periodic pension cost	87,025	133,422
Company contributions to pension plans	23,561	63,561
Expected additional company contributions in current fiscal year	$ 822,429