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Stock Option Plan and Stock Based Compensation - Summary of Stock Options Exercised and Tax Benefits Realized from Stock Based Compensation (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Feb. 28, 2015
Feb. 28, 2014
Feb. 28, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]      
Total cash received $ 54us-gaap_ProceedsFromStockOptionsExercised $ 94us-gaap_ProceedsFromStockOptionsExercised $ 85us-gaap_ProceedsFromStockOptionsExercised
Income tax (expense) benefit (106)us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense 17us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense 66us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Total grant-date fair value 9ebf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodGrantDateFairValue 50ebf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodGrantDateFairValue 13ebf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodGrantDateFairValue
Intrinsic value $ 36us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue $ 117us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue $ 54us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue