Property, Equipment and Leasehold Improvements (Details) - USD ($)	Aug. 31, 2019	Aug. 31, 2018
Held for use:
Machinery and equipment	$ 8,739,000	$ 7,903,000
Furniture and fixtures	1,112,000	1,013,000
Vehicles	155,000	155,000
Leasehold improvements	2,514,000	2,495,000
Land	0	1,717,000
Building	0	5,490,000
Construction in progress	820,000	0
Total held for use	13,340,000	18,773,000
Less: accumulated depreciation and amortization	(9,623,000)	(8,926,000)
Total property, equipment, and leasehold improvements held for use, net	3,717,000	9,847,000
Held for sale:
Land	1,716,000	0
Building	5,489,000	0
Total held for sale	7,205,000	0
Less: accumulated depreciation and amortization	(350,000)	0
Total property, equipment, and leasehold improvements held for sale, net	6,855,000	0
Total property, equipment, and leasehold improvements, net	$ 10,572,000	$ 9,847,000