Commitments and Contingencies (Narrative) (Details) - Aug. 01, 2015 $ in Millions	USD ($) ft² lease
Commitments and Contingencies [Line Items]
Number Of Leases | lease	20
Lessee Leasing Arrangements, Operating Leases, Term of Contract	10 years
Purchase commitments	$ 32.0
Purchase Commitment, Remaining Minimum Amount Committed	$ 1.1
Minimum [Member]
Commitments and Contingencies [Line Items]
Area of Real Estate Property | ft²	700,000
Maximum [Member]
Commitments and Contingencies [Line Items]
Area of Real Estate Property | ft²	1,000,000
Lessee Leasing Arrangements, Operating Leases, Renewal Term	5 years
Distribution Center [Member]
Commitments and Contingencies [Line Items]
Purchase commitments	$ 45.0