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Employee Benefit Plans (Notes)	12 Months Ended
Employee Benefit Plans (Notes)	Feb. 28, 2018
Postemployment Benefits [Abstract]
Employee benefit plans	Employee benefit plans The Company has historically had a profit sharing plan and 401(k) match plan covering substantially all of its employees. Under the provisions of the plan, the Company contributes amounts as authorized by the Board of Directors. Total contributions to the profit sharing plan and the Company’s 401(k) match plan, were $4.8 million, $4.5 million, and $4.9 million for fiscal 2018, 2017, and 2016, respectively.