Acquisitions (Schedule of Recognized Identified Assets Acquired and Liabilities Assumed) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Business Acquisition [Line Items]
Goodwill	$ 71,150	$ 61,841	$ 49,041
Nelson Laboratories [Member]
Business Acquisition [Line Items]
Receivables			4,041
Inventories			3,594
Property and equipment			1,900
Goodwill			1,823
Intangibles			140
Total assets acquired			11,498
Accounts payable			4,498
Total liabilities assumed			4,498
Net assets acquired			7,000
Micro Beef Technologies [Member]
Business Acquisition [Line Items]
Cash		1
Receivables		22,374
Inventories		27,701
Other current assets		105
Property and equipment		8,882
Investments		199
Goodwill		12,473
Intangibles		15,760
Total assets acquired		87,495
Accounts payable		25,026
Accrued expenses		1,591
Total liabilities assumed		26,617
Net assets acquired		60,878
Prescription Containers, Inc. [Member]
Business Acquisition [Line Items]
Receivables	3,585
Inventories	1,928
Goodwill	9,327
Intangibles	4,780
Total assets acquired	19,620
Accounts payable	2,513
Total liabilities assumed	2,513
Net assets acquired	$ 17,107