Other Comprehensive Income (Loss) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 28, 2017	Jul. 29, 2016	Jul. 28, 2017	Jul. 29, 2016	Apr. 28, 2017	Jan. 27, 2017	Apr. 29, 2016	Jan. 30, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance: Accumulated other comprehensive loss (net of tax of $6,189, $3,806, $6,691 and $5,053 respectively)	$ (11,909,000)	$ (7,069,000)	$ (12,426,000)	$ (9,384,000)
Other comprehensive (loss) income:
Foreign currency translation adjustments (net of tax expense of $135, $1,661, $636 and $414 respectively)	622,000	(3,084,000)	1,139,000	(769,000)
Ending balance: Accumulated other comprehensive loss (net of tax of $6,054, $5,467, $6,054 and $5,467 respectively)	(11,287,000)	(10,153,000)	(11,287,000)	(10,153,000)
Foreign currency translations adjustment, tax	135,000	1,661,000	637,000	414,000
Accumulated other comprehensive loss, tax	$ 6,054,000	$ 5,467,000	$ 6,054,000	$ 5,467,000	$ 6,189,000	$ 6,691,000	$ 3,806,000	$ 5,053,000