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Discontinued Operations (Details Textual) (USD $) | 12 Months Ended |  |  | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended
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Sep. 30, 2012 | Sep. 30, 2010 | Aug. 31, 2010 | Sep. 30, 2009 | Sep. 30, 2011 Pharmaceuticals [Member] | Sep. 30, 2011 Alabama [Member] | Sep. 30, 2010 Alabama [Member] | Sep. 30, 2010 Alabama [Member] Land [Member] | Sep. 30, 2011 Alabama [Member] Buildings and improvements [Member] | Sep. 30, 2010 Alabama [Member] Buildings and improvements [Member] | Sep. 30, 2010 Alabama [Member] Laboratory Fixtures and Equipment [Member] | Dec. 31, 2010 Surmodics Pharmaceuticals [Member] | Sep. 30, 2012 Surmodics Pharmaceuticals [Member] | Sep. 30, 2011 Surmodics Pharmaceuticals [Member] | Sep. 30, 2007 Surmodics Pharmaceuticals [Member]
Discontinued Operations (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset impairment charges totaling |  |  |  |  | $ 28,100,000 | $ 23,300,000 | $ 1,900,000 |  |  |  |  |  |  |  |
Impairment of long lived fixed assets disposed |  |  |  |  | 23,300,000 |  |  |  |  |  |  |  |  |  |
Impairment of long lived intangible assets disposed |  |  |  |  | 4,800,000 |  |  |  |  |  |  |  |  |  |
Impairment of long-lived asset |  | 1,900,000 |  |  |  |  |  | 500,000 | 23,300,000 | 1,200,000 | 200,000 |  |  |  |
Goodwill impairment charge |  |  |  |  |  |  |  |  |  |  |  | 5,700,000 | 13,800,000 |  | 19,500,000
Additional purchase price |  |  |  |  |  |  |  |  |  |  |  |  | 5,700,000 | 5,700,000 | 13,800,000
Discontinued Operations (Additional Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Consideration received from the Pharma Sale | 30,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on sale of discontinued operations, net of income taxes | (1,074,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income tax benefit | 1,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted time period for competition | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred tax assets and retained liability | $ 1,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock price at October 1, 2009 |  |  |  | $ 24.13 |  |  |  |  |  |  |  |  |  |  |
Stock price at impairment test date |  |  | $ 12.03 |  |  |  |  |  |  |  |  |  |  |  |

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