Condensed Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Nov. 30, 2011	Nov. 30, 2010
Distribution sales	$ 26,150	$ 25,344
Cost of goods sold	18,878	18,477
Gross profit from distribution operations	7,272	6,867
Rental revenue	311	312
Cost of rental operations	193	235
Gross profit from rental operations	118	77
Operating expenses:
Selling, general and administrative expenses	6,530	6,120
Income from operations	860	824
Other non-operating income (expense):
Gain on sale of trading securities	0	6
Unrealized gain on trading securities	193	209
Interest and other income	4	0
Interest expense	(185)	(195)
Net income before income taxes	872	844
Provision for income taxes	(247)	(244)
Net income	625	600
Undeclared cumulative preferred stock dividend	(19)	(19)
Net income attributable to common shareholders	$ 606	$ 581
Basic and diluted earnings per share (in dollars per share)	$ 0.12	$ 0.12
Basic and diluted weighted average common shares outstanding (in shares)	4,861,590	4,861,590