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Quarterly Dividend Program (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Jul. 29, 2012
Dividends [Line Items]  
Cash dividend payment, per share $ 0.03
Dividend declared date Jun. 13, 2012
Date of record of shareholders entitled to dividends Jul. 02, 2012
Quarterly cash dividends paid $ 381