Acquisitions, Price Allocation (Details) (USD $) In Thousands	Sep. 30, 2011		Sep. 30, 2010	Sep. 30, 2009
Business Acquisition Allocation Details [Abstract]
Business acquisition cash	$ 0		$ 674	$ 0
Business acquisition receivables	4,041		32,371	0
Business acquisition inventory	3,594		17,830	0
Business acquisition purchase price allocation other current assets	0		480	0
Business acquisition property and equipment	1,900		5,275	0
Business acquisition goodwill	1,823		9,483	(117)	[1]
Business acquisition intangibles	140		17,658	0
Total assets acquired	11,498		83,771	(117)
Business acquisition accounts payable	4,498		25,811	0
Busniess acquisition accrued expenses	0		5,299	0
Business acquisition other liabilities	0		10,476	0
Total liabilities assumed	4,498		41,586	0
Net assets acquired	$ 7,000	[2]	$ 42,185	$ (117)

[1] (1) Amount in 2009 relates to a post-closing working capital adjustment for the AAHA MarketLink acquisition.

[2] (2) Net assets acquired does not include $2,000 paid in fiscal year 2011 to an escrow account for the acquisition of Micro.