Fair Value Measurements (Details Textual) (USD $)	3 Months Ended	12 Months Ended		12 Months Ended			12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Significant Unobservable Inputs (Level 3) [Member]	Sep. 30, 2010 Alabama [Member]	Sep. 30, 2012 Alabama [Member]	Sep. 30, 2011 Pharmaceuticals [Member]	Sep. 30, 2010 Certain Long Lived Assets [Member]	Sep. 30, 2010 Fixed Asset Costs Located in Minnesota [Member]	Sep. 30, 2010 Prototypes and Other Equipment [Member]	Sep. 30, 2010 Company one [Member]	Sep. 30, 2010 Company two [Member]	Sep. 30, 2010 Company three [Member]
Fair Value Measurements (Textual) [Abstract]
Maximum fair value of mortgage-backed and asset-backed securities available for sale			$ 50,000
Long-lived asset impairment charges		4,900,000					1,300,000	1,300,000	400,000
Wrote down of investments		7,900,000								2,400,000	200,000	5,300,000
Asset impairment charges in discontinued operations				1,900,000
Facility carrying value					2,100,000
Long-lived assets on the current valuation of the assets	24,911,000					30,000,000
Fair Value Measurements (Additional Textual) [Abstract]
Held-to-maturity investments	3,000,000
Asset impairment charges	28,100,000	3,006,000							400,000
Fixed asset impairment charges	23,300,000
Intangibles asset impairment charges	4,800,000
Impairment of long-lived asset in continuing operations		3,000,000
Impairment of long-lived asset in discontinuing operations		$ 1,900,000