Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Aug. 31, 2012	Aug. 31, 2011
Distribution sales	$ 113,384	$ 103,467
Cost of goods sold	82,023	74,865
Gross margin	31,361	28,602
Rental revenue	1,250	1,242
Cost of rental operations	641	583
Gross income from rental operations	609	659
Operating expenses:
Selling, general and administrative expenses	27,648	25,031
Total operating expenses	27,648	25,031
Income from operations	4,322	4,230
Other non-operating income (expense):
Income on sale of trading securities	287	313
Unrealized gain (loss) on trading securities	207	(172)
Interest and other income	20	3
Interest expense	(737)	(770)
Income before income taxes	4,099	3,604
Provision for income taxes	1,679	1,465
Net income	2,420	2,139
Undeclared cumulative preferred stock dividend	(76)	(76)
Net income available to common shareholders	$ 2,344	$ 2,063
Basic and diluted net income per share (in dollars per share)	$ 0.48	$ 0.42
Basic and diluted weighted average common shares outstanding (in shares)	4,861,590	4,861,590