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SHARE-BASED COMPENSATION: Exercise Prices Per Share (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Nov. 30, 2012
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Shares, Options Outstanding 1,343
Weighted-Average Life (Years), Options Outstanding 5 years 15 days
Weighted-Average Exercise Price, Options Outstanding $ 21.89
Shares, Options Vested and Exercisable 1,007
Weighted-Average Life (Years), Options Vested and Exercisable 3 years 10 months 10 days
Weighted-Average Exercise Price, Options Vested and Exercisable $ 19.35