Consolidated Statement Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 30, 2014	Apr. 30, 2013
Statement of Comprehensive Income [Abstract]
Net Income (Loss) Attributable to Parent	$ 13,467	$ 17,760
Other comprehensive income:
Foreign currency translation adjustment	46,861	(47,609)
Total comprehensive income (loss)	$ 60,328	$ (29,849)