Consolidated Statements of Other Comprehensive Income (Loss) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Nov. 30, 2021 |
Nov. 30, 2020 |
|
| Statement Of Other Comprehensive Income [Abstract] | ||
| Net income (loss) | $ 692 | $ (4,651) |
| Other comprehensive loss: | ||
| Unrealized losses on available-for-sale securities | (13) | |
| Total other comprehensive loss | (13) | |
| Comprehensive income (loss) | $ 679 | $ (4,651) |