CONSOLIDATED BALANCE SHEETS (Parenthetical) (Unaudited) (USD $)	May 31, 2014	Aug. 31, 2013
Current Assets:
Receivables, allowance for doubtful accounts	$ 2,000	$ 0
Prepaid expenses and other current assets, fair value of derivative instruments	378,000	0
Other non-current assets, fair value of derivative instruments	729,000	1,505,000
LIABILITIES AND EQUITY
Other long-term liabilities, fair value of derivative instruments	104,000	14,000
defined benefit plan (other long-term liabilities)	$ 664,000	$ 589,000
Equity:
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	45,000,000	45,000,000
Common stock, issued (in shares)	30,948,290	30,924,392
Common stock, outstanding (in shares)	30,209,596	30,234,506
Preferred Stock, Par or Stated Value Per Share	$ 0.0001	$ 0.0001
Preferred Stock, Shares Authorized	2,000,000	2,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Treasury stock, shares (in shares)	738,694	689,886