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Income Taxes - Roll Forward of Gross Unrecognized Tax Benefits (Detail) - USD ($)
$ in Thousands
12 Months Ended
Nov. 30, 2016
Nov. 30, 2015
Nov. 30, 2014
Reconciliation of Unrecognized Tax Benefits      
Balance at beginning of period $ 107,902 $ 126,662 $ 126,844
Increases based on tax positions related to the current period 5,045 0 4,831
Increases based on tax positions related to prior periods 1,447 2,818 1,624
Decreases based on tax positions related to prior periods (4,520) (3,883) (1,709)
Decreases related to settlements with taxing authorities (347) (17,695) (4,928)
Balance at end of period $ 109,527 $ 107,902 $ 126,662