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Common Stock Options (Stock-Based Compensation Expense) (Details) (USD $)
12 Months Ended
Feb. 01, 2014
Feb. 02, 2013
Jan. 28, 2012
Share-based Compensation [Abstract]      
Expected volatility 50.00% 50.00% 50.00%
Risk-free interest rate 1.40% 1.30% 2.00%
Expected life of options 6 years 3 months 18 days 6 years 3 months 18 days 7 years
Expected dividend yield 0.00% 0.00% 0.00%
Weighted average grant-date fair value of stock options granted (dollars per share) $ 18.90 $ 7.42 $ 3.58
Total intrinsic value of stock options exercised $ 7,200,000 $ 200,000 $ 0
Proceeds from stock options exercised 1,500,000 36,000  
Excess tax benefit related to restricted shares and exercise of stock options and warrants 2,262,000 1,647,000 0
Unrecognized compensation costs related to non-vested share-based compensation $ 11,600,000    
Unrecognized compensation costs related to nonvested share-based compensation, recognized period (years) 2 years 9 months 28 days