Debt (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended
	Nov. 02, 2013	Feb. 02, 2013
Line of Credit Facility [Line Items]
Number of unsecured credit facilities	2	2
Available borrowings under credit facilities	$ 80.0	$ 80.0
August 2013 Facility [Member]
Line of Credit Facility [Line Items]
Expiration date of renewed facility	Aug. 22, 2014	Aug. 22, 2014
Maximum borrowing capacity under renewed facility	30.0	30.0
Interest rate under renewed facility	higher of prime rate, the federal funds rate plus 0.5% or LIBOR	higher of prime rate, the federal funds rate plus 0.5% or LIBOR
Interest rate spread on variable rate (in hundredths)	0.50%	0.50%
Debt outstanding at period end	0	0
November 2013 Facility [Member]
Line of Credit Facility [Line Items]
Expiration date of renewed facility	Nov. 18, 2013	Nov. 18, 2013
Maximum borrowing capacity under renewed facility	50.0	50.0
Interest rate under renewed facility	prime plus 2%	prime plus 2%
Interest rate spread on variable rate (in hundredths)	2.00%	2.00%
Debt outstanding at period end	$ 0	$ 0