Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Jan. 29, 2017	Jan. 31, 2016	Jan. 25, 2015
Net income	$ 54,661	$ 11,497	$ 27,947
Other comprehensive income, net:
Change in net unrealized holding loss on available-for-sale investments	0	0	(1)
Change in employee benefit plans	(2,414)	0	0
Other changes to comprehensive income	129	0	0
Other comprehensive (loss) income, net of tax	(1,947)	490	(90)
Comprehensive income	52,714	11,987	27,857
Foreign currency cash flow hedges
Other comprehensive income, net:
Unrealized gain (loss) on derivatives	522	0	0
Adjustment for net gains realized and included in net income	(232)	0	0
Change in unrealized gain (loss) on interest rate cap	290	0	0
Interest rate cap
Other comprehensive income, net:
Unrealized gain (loss) on derivatives	48	(204)	(242)
Adjustment for net gains realized and included in net income	0	694	153
Change in unrealized gain (loss) on interest rate cap	$ 48	$ 490	$ (89)