Income Taxes (Details) - USD ($) $ in Thousands			3 Months Ended	6 Months Ended
Jan. 01, 2018	Dec. 31, 2017	Feb. 29, 2020	Feb. 28, 2019	Feb. 29, 2020	Feb. 28, 2019
Effective income tax rate
Income taxes			$ 2,926	$ 1,659	$ 5,635	$ 4,644
Income before income taxes			$ 10,805	$ 6,932	$ 20,876	$ 18,740
Effective income tax rate			27.10%	23.90%	27.00%	24.80%
Statutory tax rate (as a percent)	21.00%	35.00%			21.00%	21.00%

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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