Discontinued Operations and Assets Held for Sale Discontinued Operation Narrative(Details) (USD $)	3 Months Ended		0 Months Ended		3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 14, 2009 Medical Products Business Unit [Member]	Mar. 09, 2012 Semiconductor Business Unit [Member]	Mar. 31, 2013 Semiconductor Business Unit [Member]	Mar. 31, 2012 Semiconductor Business Unit [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Date			Dec. 14, 2009	Mar. 09, 2012
Business Divestiture, Sale Price				$ 8,000,000
Proceeds from Divestiture of Businesses						7,300,000
Restricted Cash and Cash Equivalents, Noncurrent						718,000
Business Divestiture, Sale Price Allocation, Liabilities Assume				500,000		1,200,000
Business Divestiture, Cost of Divisiture Entity, Transaction Costs						425,000
Loss from discontinued operations before sale of business unit	$ 0	$ (430,000)			$ 0	$ (430,000)