Significant Accounting Policies - Changes in Other Comprehensive (Loss) Income by Component (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 29, 2017	Jan. 31, 2016	Jan. 25, 2015
Defined benefit plan
Other comprehensive (loss) before reclassifications - Pre-tax	$ (2,861)	$ 0	$ 0
Other comprehensive (loss) before reclassifications - Tax	447	0	0
Other comprehensive (loss) before reclassifications - Net	(2,414)	0	0
Other
Other comprehensive gain before reclassifications - Pre-tax	129	0	(1)
Other comprehensive gain before reclassifications - Tax	0	0	0
Other comprehensive gain before reclassifications - Net	129	0	(1)
Total comprehensive income (loss)
Total other comprehensive (loss) income - Pre-tax	(2,358)	661	(43)
Total other comprehensive (loss) income - Tax	411	(171)	(47)
Total other comprehensive (loss) income - Net	(1,947)	490	(90)
Foreign currency cash flow hedges
Derivatives qualifying as hedges
Other comprehensive gain (loss) before reclassifications - Pre-tax	586	0	0
Other comprehensive gain (loss) before reclassifications - Tax	(64)	0	0
Other comprehensive gain (loss) before reclassifications - Net	522	0	0
Reclassification adjustments included in Interest expense, net - Pre-tax	(260)	0	0
Reclassification adjustments included in Interest expense, net - Tax	28	0	0
Reclassification adjustments included in Interest expense, net - Net	(232)	0	0
Interest rate cap
Derivatives qualifying as hedges
Other comprehensive gain (loss) before reclassifications - Pre-tax	48	(33)	(284)
Other comprehensive gain (loss) before reclassifications - Tax	0	(171)	42
Other comprehensive gain (loss) before reclassifications - Net	48	(204)	(242)
Reclassification adjustments included in Interest expense, net - Pre-tax	0	694	242
Reclassification adjustments included in Interest expense, net - Tax	0	0	(89)
Reclassification adjustments included in Interest expense, net - Net	$ 0	$ 694	$ 153