FAIR VALUE MEASUREMENTS: (Acquisition Related Contingent Consideration) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
May 31, 2013
May 31, 2013
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Decrease in fair value of contingent consideration $ (142) $ (447)
GBS [Member] | Minimum [Member]
   
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Periods of established profitability measures (in years)   1
GBS [Member] | Maximum [Member]
   
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Periods of established profitability measures (in years)   3