Leases - Weighted Average Remaining Lease Term (Details) $ in Thousands	9 Months Ended
	May 31, 2020 USD ($)
Operating lease
Operating leases, Weighted average remaining lease term (years)	5 years 7 months 6 days
Operating leases, Weighted average discount rate (percentage)	3.10%
Operating cash outflows from operating leases	$ 1,818
Total cash paid for amounts included in the measurement of lease liabilities	$ 1,818