Condensed Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 28, 2014	Feb. 28, 2013
Revenues	$ 30,922	$ 28,520	$ 61,957	$ 57,780
Cost of revenues	22,412	20,474	44,541	41,633
Gross margin	8,510	8,046	17,416	16,147
Operating expenses:
Selling, general and administrative expenses	8,027	7,350	15,806	14,610
Income from operations	483	696	1,610	1,537
Other (expense) income:
Loss on trading securities	(148)	(97)	(57)	(119)
Gain on sale of property	0	540	535	540
Interest expense, net	(112)	(166)	(211)	(333)
Total other (expense) income	(260)	277	267	88
Net income before income taxes	223	973	1,877	1,625
Provision for income taxes	114	332	704	601
Net income	109	641	1,173	1,024
Cumulative preferred stock dividend	(19)	(19)	(38)	(38)
Net income attributable to common shareholders	$ 90	$ 622	$ 1,135	$ 986
Basic and diluted earnings per share (in dollars per share)	$ 0.02	$ 0.13	$ 0.23	$ 0.20
Basic and diluted weighted average common shares outstanding (in shares)	4,861,590	4,861,590	4,861,590	4,861,590