BUSINESS COMBINATIONS (Details) - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (USD $) In Thousands, unless otherwise specified	12 Months Ended		24 Months Ended
	Jan. 31, 2014	Jan. 31, 2012	Jan. 31, 2013
Consideration transferred:
Cash	$ 10,413
Fair value of non-controlling interest	955
Fair value of 48% equity method investment	18,642
	30,010
Net assets acquired:
Cash	24,971
Accounts receivable	7,381
Inventory	8,491
Prepaid expenses and other current assets	711
Other assets	2,995
Property, plant and equipment	78,618
Current liabilities	(19,167)
Long-term debt	(65,000)
	39,000
Bargain purchase gain	$ 8,990	$ 3,541	$ 3,500