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Intangible Assets and Goodwill Expected Amortization of Finite-lived Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
Nov. 30, 2014
Expected Amortization of Finite-lived Intangible Assets [Abstract]  
2015 $ 920us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear
2016 1,514us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
2017 1,514us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
2018 1,255us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
2019 $ 1,076us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive