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INCOME TAXES: Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Nov. 30, 2017
Nov. 30, 2016
Nov. 30, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Unrecognized tax benefits, beginning balance $ 32,774 $ 22,815 $ 21,874
Additions based on tax positions related to the current year 9,022 6,727 3,485
Additions for tax positions of prior years 231 5,613 923
Lapse of statue of limitations (2,300) (2,241) (3,441)
Decrease due to translation of foreign currency   (140) (26)
Settlements (1,624)    
Increase due to translation of foreign currency 179    
Unrecognized tax benefits, ending balance 38,282 32,774 $ 22,815
Unrecognized tax benefits that would affect effective tax rate if realized 37,540    
Unrecognized tax benefits, accrual for interest and penalty $ 5,867 $ 4,461