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Earnings per share - Additional Information (Detail)	3 Months Ended
Earnings per share - Additional Information (Detail)	May 02, 2015	May 03, 2014
Equity [Abstract]
Effect of treasury shares and non-vested restricted stock excluded from basic weighted average number of shares outstanding (shares)	7,207,154	7,272,616
Anti-dilutive shares excluded from the calculation of earnings per share (shares)	74,148	0

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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