EMPLOYEE BENEFIT PLANS (Details) (USD $)	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
EMPLOYEE BENEFIT PLANS [Abstract]
After tax decrease to shareholders equity due to unfunded accumulated benefit obligation	$ 177,397	$ 4,228,638
Components of net periodic pension (income) cost [Abstract]
Service cost	224,138	205,725	211,500
Interest cost	1,088,872	1,121,492	1,118,007
Expected return on plan assets	(1,219,287)	(1,401,943)	(1,011,021)
Recognized net actuarial loss	439,965	209,830	243,640
Net periodic benefit cost	$ 533,688	$ 135,104	$ 562,126