Note 7. Stock-based Compensation: Schedule of Share-based Compensation, Activity (Details)	3 Months Ended
	Nov. 30, 2012
Granted	5,000
Shares
Options Outstanding, beginning of period	3,182,239
Granted	5,000
Exercised	0
Forfeited or expired	(12,000)
Outstanding, End of Period	3,175,239
Exercisable	1,781,444
Weighted Average Exercise Price
Options Outstanding, beginning of period	3.54
Granted	2.05
Exercised	0
Forfeited or expired	3.85
Outstanding, End of Period	3.53
Exercisable	3.83
Weighted Average Remaining Contact Term (Years)
Outstanding, End of Period	6.47
Exercisable	5.34
Aggregate Intrinsic Value
Exercised	0
Outstanding, End of Period	92,207
Exercisable	90,307