8. SEGMENT AND GEOGRAPHIC REPORTING (Details - geographic) - USD ($)	3 Months Ended		9 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2018	May 31, 2017
Net revenues	$ 8,553,068	$ 6,748,518	$ 22,978,565	$ 17,872,044
North America [Member]
Net revenues	5,252,000	4,334,000	14,097,000	11,448,000
Europe [Member]
Net revenues	1,517,000	1,144,000	4,396,000	3,201,000
Asia [Member]
Net revenues	1,784,000	1,271,000	4,471,000	3,222,000
South America [Member]
Net revenues	0	1,000	15,000	1,000
Lancaster [Member]
Net revenues	5,654,000	4,948,000	14,247,000	12,685,000
Lancaster [Member] | North America [Member]
Net revenues	2,595,000	2,533,000	6,126,000	6,261,000
Lancaster [Member] | Europe [Member]
Net revenues	1,367,000	1,144,000	4,201,000	3,201,000
Lancaster [Member] | Asia [Member]
Net revenues	1,692,000	1,271,000	3,905,000	3,222,000
Lancaster [Member] | South America [Member]
Net revenues	0	0	15,000	1,000
Buffalo [Member]
Net revenues	1,942,000	1,801,000	5,722,000	5,187,000
Buffalo [Member] | North America [Member]
Net revenues	1,942,000	1,801,000	5,722,000	5,187,000
Buffalo [Member] | Europe [Member]
Net revenues	0	0	0	0
Buffalo [Member] | Asia [Member]
Net revenues	0	0	0	0
Buffalo [Member] | South America [Member]
Net revenues	0	$ 0	0	$ 0
North Carolina [Member]
Net revenues	957,000		3,010,000
North Carolina [Member] | North America [Member]
Net revenues	715,000		2,249,000
North Carolina [Member] | Europe [Member]
Net revenues	150,000		195,000
North Carolina [Member] | Asia [Member]
Net revenues	92,000		566,000
North Carolina [Member] | South America [Member]
Net revenues	$ 0		$ 0