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Diluted Loss or Earnings Per Ordinary Share (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Dec. 28, 2012
Dec. 30, 2011
Dec. 28, 2012
Dec. 30, 2011
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]        
Net income (loss) used to determine diluted earnings (loss) per ordinary share $ 16,682 $ (33,254) $ 32,701 $ (17,599)
Weighted average number of ordinary shares outstanding (thousands of shares) 34,517 34,396 34,501 34,309
Adjustment for incremental shares arising from the assumed exercise of share options and vesting of restricted share units (thousands of shares) 287   236  
Weighted average number of ordinary shares for diluted earnings (loss) per ordinary share (thousands of shares) 34,804 34,396 [1] 34,737 34,309 [2]
Diluted earnings (loss) per ordinary share $ 0.48 $ (0.97) $ 0.94 $ (0.51)
[1] Loss per ordinary share for the three months ended December 30, 2011 was computed using the weighted average number of ordinary shares outstanding during the period in accordance with the antidilutive provisions of ASC 260-10-45; therefore 147,719 shares were excluded.
[2] Loss per ordinary share for the six months ended December 30, 2011 was computed using the weighted average number of ordinary shares outstanding during the period in accordance with the antidilutive provisions of ASC 260-10-45; therefore 213,127 shares were excluded.