Related Party Transactions - Schedule of Related Party Reimbursements and Other Payments (Details) - Kura Japan - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
Related Party Transaction [Line Items]
Total related party transactions	$ 852	$ 203	$ 1,763	$ 874
Purchases of Administrative Supplies
Related Party Transaction [Line Items]
Total related party transactions		4		76
Expatriate Salaries Expense
Related Party Transaction [Line Items]
Total related party transactions	33	30	116	92
Royalty Payments
Related Party Transaction [Line Items]
Total related party transactions	190	93	496	185
Travel and Other Administrative Expenses
Related Party Transaction [Line Items]
Total related party transactions	5		24	17
Purchases of Equipment
Related Party Transaction [Line Items]
Total related party transactions	$ 624	29	$ 1,127	430
Interest Expense
Related Party Transaction [Line Items]
Total related party transactions		$ 47		$ 74