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Goodwill and Intangible Assets (Details) (USD $)
3 Months Ended 9 Months Ended
Oct. 31, 2014
Nov. 01, 2013
Oct. 31, 2014
Nov. 01, 2013
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization expense related to intangible assets $ 700,000 $ 700,000 $ 2,000,000 $ 1,315,000
Impairment of goodwill or intangible assets, amount $ 0 $ 0 $ 0 $ 0