CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Aug. 31, 2012	Aug. 31, 2011
Assets, Current [Abstract]
Allowance for Doubtful Accounts Receivable, Current	$ 1	$ 5
Liabilities and Equity [Abstract]
Other long-term liabilities, fair value of derivative instruments	1,200	884
Other long-term liabilities, defined benefit plan	$ 396	$ 471
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common Stock, Par or Stated Value Per Share	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized	45,000,000	45,000,000
Common Stock, Shares, Issued	30,855,651	30,695,933
Common Stock, Shares, Outstanding	30,210,225	29,900,030
Treasury Stock, Shares	645,426	795,903