Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2017	Feb. 29, 2016
Revenues	$ 37,284	$ 34,589	$ 74,491	$ 68,882
Cost of revenues	26,713	24,469	53,364	48,793
Gross margin	10,571	10,120	21,127	20,089
Operating expenses:
Selling, general and administrative expenses	9,310	9,087	18,697	18,221
Income from operations	1,261	1,033	2,430	1,868
Other (expense) income:
Net (loss) gain on trading securities	(23)	180	(126)	171
Interest and other (expense)	(31)	2	(35)	(4)
Total other (expense) income	(54)	182	(161)	167
Income before income taxes	1,207	1,215	2,269	2,035
Provision for income taxes	459	484	861	804
Net income	748	731	1,408	1,231
Cumulative preferred stock dividend	(19)	(19)	(38)	(38)
Net income attributable to common shareholders	$ 729	$ 712	$ 1,370	$ 1,193
Basic and diluted earnings per share (in dollars per share)	$ 0.15	$ 0.15	$ 0.28	$ 0.25
Basic and diluted weighted average common shares outstanding (in shares)	4,861,590	4,861,590	4,861,590	4,861,590