Acquisitions, Goodwill and Other Intangible Assets (Details 1) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2016 USD ($) company $ / shares	Jan. 31, 2015 USD ($) $ / shares
Business Combinations [Abstract]
Number of Businesses Acquired | company	2
Business Acquisition, Pro Forma Revenue	$ 668,435	$ 450,875
Business Acquisition, Pro Forma Net Income (Loss)	$ (301,527)	$ (229,755)
Business Acquisition, Pro Forma Earnings Per Share, Basic and Diluted | $ / shares	$ (2.38)	$ (1.92)