Summary of Significant Accounting Policies (Details 1) (USD $) In Thousands	Sep. 30, 2011	Sep. 30, 2010
Summary of acquired intangible assets subject to amortization
Gross Carrying Value	$ 27,386	$ 27,854
Accumulated Amortization	16,439	14,527
Manufacturing technologies, core products and cell lines [Member]
Summary of acquired intangible assets subject to amortization
Gross Carrying Value	11,626	11,644
Accumulated Amortization	8,545	7,693
Trademarks, licenses and patents [Member]
Summary of acquired intangible assets subject to amortization
Gross Carrying Value	3,538	3,547
Accumulated Amortization	1,337	997
Customer lists and supply agreements [Member]
Summary of acquired intangible assets subject to amortization
Gross Carrying Value	12,222	12,537
Accumulated Amortization	6,557	5,816
Noncompete Agreements [Member]
Summary of acquired intangible assets subject to amortization
Gross Carrying Value		126
Accumulated Amortization		$ 21