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Estimated Amortization Expense Relating to Intangible Assets Subject to Amortization (Detail) (USD $)
Feb. 03, 2013
Finite-Lived Intangible Assets [Line Items]  
2013 $ 1,399
2014 1,399
2015 1,399
2016 1,399
2017 588
Thereafter 255
Total future amortization expense $ 6,439