9. SEGMENT AND GEOGRAPHIC REPORTING (Details - geographic) - USD ($)	3 Months Ended		9 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Revenues	$ 6,748,518	$ 6,012,193	$ 17,872,044	$ 16,014,539
Lancaster [Member]
Revenues	4,948,000	4,664,000	12,685,000	11,722,000
Buffalo [Member]
Revenues	1,801,000	1,348,000	5,187,000	4,293,000
North America [Member]
Revenues	4,334,000	3,792,000	11,448,000	9,530,000
North America [Member] | Lancaster [Member]
Revenues	2,533,000	2,444,000	6,261,000	5,237,000
North America [Member] | Buffalo [Member]
Revenues	1,801,000	1,348,000	5,187,000	4,293,000
Europe [Member]
Revenues	1,144,000	1,247,000	3,201,000	3,651,000
Europe [Member] | Lancaster [Member]
Revenues	1,144,000	1,247,000	3,201,000	3,651,000
Europe [Member] | Buffalo [Member]
Revenues	0	0	0	0
Asia [Member]
Revenues	1,271,000	973,000	3,222,000	2,833,000
Asia [Member] | Lancaster [Member]
Revenues	1,271,000	973,000	3,222,000	2,833,000
Asia [Member] | Buffalo [Member]
Revenues	0	0	0	0
South America [Member]
Revenues	0	0	1,000	1,000
South America [Member] | Lancaster [Member]
Revenues	0	0	1,000	1,000
South America [Member] | Buffalo [Member]
Revenues	$ 0	$ 0	$ 0	$ 0