Note 5 - Accounts Receivable, Concentrations of Credit Risk and Inventories (Detail) - Allowance For Doubtful Accounts (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Nov. 30, 2012
Beginning balance, September 1 $ 16,804
Ending balance, November 30 17,399
Increased provision 2,560
Write offs (1,652)
Recovery (204)
Other $ (109)