v3.10.0.1

Earnings Per Share (Computation Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Aug. 31, 2018	May 31, 2018	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Nov. 30, 2016	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2016
Numerator:
Net income	$ 18,592	$ 21,576	$ 19,607	$ 11,430	$ 20,831	$ 18,751	$ 10,963	$ 13,118	$ 71,205	$ 63,663	$ 64,067
Denominator:
Weighted average common shares outstanding - basic (in shares)									37,618	43,306	48,703
Effect of dilutive employee stock options and unvested RSUs (in shares)									468	737	966
Weighted average common shares outstanding - diluted (in shares)									38,086	44,043	49,669
Net income per common share - basic (usd per share)	$ 0.52	$ 0.58	$ 0.51	$ 0.29	$ 0.50	$ 0.44	$ 0.25	$ 0.29	$ 1.89	$ 1.47	$ 1.32
Net income per common share - diluted (usd per share)	$ 0.51	$ 0.58	$ 0.51	$ 0.29	$ 0.50	$ 0.44	$ 0.25	$ 0.28	$ 1.87	$ 1.45	$ 1.29
Anti-dilutive securities excluded (in shares)									1,157	1,154	615

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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