Leases (Assets And Liabilities Related To Operating Leases) (Details) $ in Thousands	Aug. 31, 2020 USD ($)
Assets:
Operating lease right of use assets	$ 1,203
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets, Noncurrent
Liabilities:
Current: Operating lease liabilities	$ 695
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued Liabilities, Current
Long-Term: Operating lease liabilities	$ 508
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other Liabilities, Noncurrent
Present value of operating lease liabilities	$ 1,203
Weighted Average Remaining Lease Term: Operating leases (years)	2 years 8 months 12 days
Weighted Average Discount Rate: Operating leases	4.20%