Income Taxes (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Jan. 01, 2018 |
Dec. 31, 2017 |
May 31, 2020 |
May 31, 2019 |
May 31, 2020 |
May 31, 2019 |
|
| Effective income tax rate | ||||||
| Income taxes | $ 2,619 | $ 3,647 | $ 8,254 | $ 8,291 | ||
| Income before income taxes | $ 12,527 | $ 12,188 | $ 33,403 | $ 30,928 | ||
| Effective income tax rate | 20.90% | 29.90% | 24.70% | 26.80% | ||
| Statutory tax rate (as a percent) | 21.00% | 35.00% | 21.00% | 21.00% | ||