Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2019	Aug. 31, 2019
Leases
Package of practical expedients	true
Assets
ROU Assets (other Assets)	$ 9,776
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Us-gaap:OtherNoncurrentAssetsMember
Current (accrued expense)	$ 2,075
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Us-gaap:AccruedLiabilitiesMember
Other non-current liabilities	$ 7,144
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Us-gaap:OtherNoncurrentLiabilitiesMember
Present value of lease liabilities	$ 9,219	$ 9,219