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INCOME TAXES: (Reconciliation of Tax Rate) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Nov. 30, 2013
Nov. 30, 2012
Nov. 30, 2011
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Federal statutory income tax rate 35.00% 35.00% 35.00%
State taxes, net of federal income tax benefit 3.10% 3.00% 2.60%
Foreign taxes (3.00%) (3.10%) (2.90%)
Other 0.90% 0.60% (0.20%)
Effective income tax rate 36.00% 35.50% 34.50%
Cumulative undistributed earnings of foreign subsidiaries $ 262,900