9. SEGMENT AND GEOGRAPHIC REPORTING (Details - geographic) - USD ($)	3 Months Ended		6 Months Ended
	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2019	Feb. 28, 2018
Revenues	$ 8,471,720	$ 7,356,714	$ 16,007,623	$ 14,425,496
Lancaster [Member]
Revenues	5,008,000	4,552,000	9,373,000	8,593,000
Buffalo [Member]
Revenues	2,292,000	1,867,000	4,357,000	3,780,000
North Carolina[Member]
Revenues	1,172,000	938,000	2,278,000	2,052,000
North America [Member]
Revenues	5,336,000	4,248,000	10,257,000	8,845,000
North America [Member] | Lancaster [Member]
Revenues	2,073,000	1,717,000	4,184,000	3,532,000
North America [Member] | Buffalo [Member]
Revenues	2,292,000	1,867,000	4,357,000	3,780,000
North America [Member] | North Carolina[Member]
Revenues	971,000	664,000	1,716,000	1,533,000
Europe [Member]
Revenues	1,898,000	1,835,000	2,897,000	2,878,000
Europe [Member] | Lancaster [Member]
Revenues	1,762,000	1,744,000	2,710,000	2,833,000
Europe [Member] | Buffalo [Member]
Revenues	0	0	0	0
Europe [Member] | North Carolina[Member]
Revenues	136,000	91,000	187,000	45,000
Asia [Member]
Revenues	1,236,000	1,262,000	2,851,000	2,687,000
Asia [Member] | Lancaster [Member]
Revenues	171,000	1,079,000	2,476,000	2,213,000
Asia [Member] | Buffalo [Member]
Revenues	0	0	0	0
Asia [Member] | North Carolina[Member]
Revenues	65,000	183,000	375,000	474,000
South America [Member]
Revenues	2,000	12,000	3,000	15,000
South America [Member] | Lancaster [Member]
Revenues	2,000	12,000	3,000	15,000
South America [Member] | Buffalo [Member]
Revenues	0	0	0	0
South America [Member] | North Carolina[Member]
Revenues	$ 0	$ 0	$ 0	$ 0