Leases (Supplemental Cash Flow Information) (Details) $ in Thousands	6 Months Ended
	Feb. 29, 2020 USD ($)
Leases [Abstract]
Operating Cash Outflows from Operating Leases	$ 12,188
Operating Cash Outflows from Finance Leases	55
Financing Cash Outflows from Finance Leases	504
Leased assets obtained in exchange for new operating lease liabilities	9,817
Leased assets obtained in exchange for new finance lease liabilities	$ 1,973