9. SEGMENT AND GEOGRAPHIC REPORTING (Details - geographic) - USD ($)	3 Months Ended
	Nov. 30, 2018	Nov. 30, 2017
Revenues	$ 7,535,903	$ 7,068,782
North America [Member]
Revenues	4,911,000	4,540,000
Europe [Member]
Revenues	998,000	1,101,000
Asia [Member]
Revenues	1,616,000	1,424,000
South America [Member]
Revenues	1,000	4,000
Lancaster [Member]
Revenues	4,365,000	4,042,000
Lancaster [Member] | North America [Member]
Revenues	2,111,000	1,816,000
Lancaster [Member] | Europe [Member]
Revenues	947,000	1,089,000
Lancaster [Member] | Asia [Member]
Revenues	1,306,000	1,133,000
Lancaster [Member] | South America [Member]
Revenues	1,000	4,000
Buffalo [Member]
Revenues	2,065,000	1,913,000
Buffalo [Member] | North America [Member]
Revenues	2,065,000	1,913,000
Buffalo [Member] | Europe [Member]
Revenues	0	0
Buffalo [Member] | Asia [Member]
Revenues	0	0
Buffalo [Member] | South America [Member]
Revenues	0	0
North Carolina[Member]
Revenues	1,106,000	1,114,000
North Carolina[Member] | North America [Member]
Revenues	745,000	811,000
North Carolina[Member] | Europe [Member]
Revenues	51,000	12,000
North Carolina[Member] | Asia [Member]
Revenues	310,000	291,000
North Carolina[Member] | South America [Member]
Revenues	$ 0	$ 0