Segment Information - Income (Loss) from Continuing Operations Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 30, 2016	Oct. 25, 2015	Oct. 30, 2016	Oct. 25, 2015
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income (loss) before taxes	$ 36,519	$ 16,157	$ 62,066	$ 20,000
Domestic
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income (loss) before taxes	937	21,146	(13,048)	3,785
Canada
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income (loss) before taxes	31,385	2,440	49,302	16,494
United Kingdom
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income (loss) before taxes	3,568	4,984	14,150	17,328
Switzerland
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income (loss) before taxes	764	(13,411)	7,791	(5,063)
Japan
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income (loss) before taxes	344	1,424	2,470	2,486
Other Foreign [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income (loss) before taxes	$ (479)	$ (426)	$ 1,401	$ (15,030)