Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Net income	$ 94,176	$ 145,177	$ 153,558
Other comprehensive loss, net of tax:
Change in unrealized gain (loss) on derivative instruments	234	(283)	1,653
Less: reclassification adjustment for net gain (loss) included in net income	312	(283)	1,599
Net change	(78)	0	54
Change in accumulated translation adjustment	(8,947)	(30,360)	(6,790)
Change in pension liability, net of tax expense (benefit) of $25, $(161), $72	(166)	(285)	135
Other comprehensive loss	(9,191)	(30,645)	(6,601)
Comprehensive income	84,985	114,532	146,957
Net loss	(2,101)	(1,962)	(1,700)
Change in accumulated translation adjustment	22	45	(5)
Comprehensive loss attributable to the noncontrolling interest	(2,079)	(1,917)	(1,705)
Comprehensive income attributable to Mentor Graphics shareholders	$ 87,064	$ 116,449	$ 148,662