Restructuring Charges (Details Textual) (USD $)	1 Months Ended	3 Months Ended				12 Months Ended
	Mar. 31, 2010 Position	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2010	Jun. 30, 2010	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010	Aug. 31, 2011	Oct. 30, 2010 Position
Restructuring Cost and Reserve [Line Items]
Restructuring accrual balance		$ 100,000				$ 100,000
Summary Of Restructuring Accrual Activity (Textual) [Abstract]
Restructuring costs related to SurModics			1,000,000	600,000		0	1,616,000	1,204,000
Eliminated Work Force	4.00%								9.00%	13.00%
Positions eliminated as a result of the organizational change	11									30
Pre-Tax Restructuring Charges			1,000,000	600,000	1,200,000
Cash payments for restructuring events						700,000
Current portion		200,000				200,000
Payments associated with facility related costs						100,000
Severance pay and benefit expenses				600,000				800,000
Restructuring accrual balance fiscal 2010 restructuring event.		200,000				200,000
Restructuring accrual balance expected to be paid within		15 months				15 months
Facility related cost								400,000
Percentage of eliminated workforce	5.00%	10.00%		8.00%
Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Long term portion		$ 100,000				$ 100,000