Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Net loss	$ (10,503)	$ (3,025)
Other comprehensive income (loss), net of tax:
Change in unrealized gain (loss) on derivative instruments	(160)	83
Less: Reclassification adjustment for net income (loss) included in net loss	(99)	155
Net change	(61)	(72)
Change in accumulated translation adjustment	617	2,962
Change in pension liability	(2)	(2)
Other comprehensive income	554	2,888
Comprehensive loss	(9,949)	(137)
Net loss attributable to noncontrolling interest	(618)	(474)
Change in accumulated translation adjustment attributable to the noncontrolling interest	50	(10)
Comprehensive loss attributable to the noncontrolling interest	(568)	(484)
Comprehensive income (loss) attributable to Mentor Graphics shareholders	$ (9,381)	$ 347