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Goodwill and Intangible Assets - Amortization (Details) - USD ($)
$ in Thousands
3 Months Ended
May 31, 2016
May 31, 2015
Goodwill and Intangible Assets    
Aggregate Amortization Expense $ 7,204 $ 6,814
Estimated Amortization Expense    
February 2017 28,197  
February 2018 24,986  
February 2019 20,423  
February 2020 19,183  
February 2021 16,282  
February 2022 $ 5,972