INCOME TAXES - Additional Information (Details) - USD ($)	6 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jan. 31, 2015
INCOME TAXES
Federal corporate income tax rate	35.00%	35.00%
Accrued income taxes included in accrued expenses	$ 1,990,000		$ 176,000
Net deferred tax liabilities	$ 1,477,000		$ 1,010,000