PROPERTY, PLANT AND EQUIPMENT - Additional Information (Details 2) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 140,000	$ 141,000	$ 258,000	$ 283,000
Costs of maintenance and repairs	169,000	70,000	271,000	119,000
Selling, General and Administrative Expenses [Member]
Property, Plant and Equipment [Line Items]
Rent expense	53,000	49,000	103,000	97,000
Costs of Revenues [Member]
Property, Plant and Equipment [Line Items]
Rent expense	$ 3,795,000	$ 2,965,000	$ 8,407,000	$ 4,561,000