Restructuring Charges (Details Textual) (USD $)	3 Months Ended			9 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2010	Jun. 30, 2012	Aug. 31, 2011	Oct. 30, 2010 Positions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restructuring accrual balance		$ 100,000		$ 100,000
Payments associated with facility related costs				100,000
Summary Of Restructuring Accrual Activity (Textual) [Abstract]
Eliminated Work Force					9.00%	13.00%
Positions eliminated as a result of the organizational change						30
Pre-Tax Restructuring Charges	1,000,000	0	600,000	0
Cash payments for restructuring events				(774,000)
Current portion		200,000		200,000
Severance pay and benefit expenses			600,000
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			100,000
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long term portion		$ 100,000		$ 100,000