Quarterly report pursuant to Section 13 or 15(d)

Share-based compensation (Detail) - Stock option plans

v2.4.0.6
Share-based compensation (Detail) - Stock option plans (USD $)
In Thousands, except Share data, unless otherwise specified
6 Months Ended
Jan. 17, 2013
Jan. 31, 2013
Options 736,490 736,490
Weighted Average Exercise Price (in Dollars per share) $ 14.50 $ 14.50
Weighted Average Remaining Contractual Term   3 years 36 days
Options vested at end of period   443,302
Options vested at end of period (in Dollars per share)   $ 16.10
Options vested at end of period   1 year 146 days
Awarded 2.88 336,817
Awarded (in Dollars per share)   $ 2.88
Cancelled   (293,188)
Cancelled (in Dollars per share)   $ 12.07
Options   780,119
Weighted Average Exercise Price (in Dollars per share)   $ 10.39
Weighted Average Remaining Contractual Term   3 years 36 days
Aggregate Intrinsic Value (in Dollars)   $ 3