Acquisitions, Goodwill and Other Intangible Assets (Details 2) - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2015	Jan. 31, 2016	Jan. 31, 2015
Business Combinations [Abstract]
Goodwill	$ 123,318	$ 123,318	$ 19,070
Goodwill, Acquired During Period	105,916
Goodwill, Translation Adjustments	$ (1,668)