Discontinued Operations - Textual (Details)	3 Months Ended		6 Months Ended			0 Months Ended		6 Months Ended
	Jun. 30, 2012 USD ($)	Jun. 30, 2011 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2011 USD ($)	Jun. 30, 2012 Turn Key [Member] USD ($)	Mar. 29, 2012 CES [Member] USD ($)	Mar. 29, 2012 CES [Member] CHF	Jun. 30, 2012 CES [Member] USD ($)	Jun. 30, 2011 CES [Member] USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income (loss) from discontinued operations, net of income taxes	$ 0	$ (2,097,000)	$ 7,975,000	$ (741,000)	$ (3,400,000)			$ (135,000)	$ 2,615,000
Discontinued Operation, Disposal of Discontinued Operation, Purchase Price						28,400,000	25,800,000
Discontinued Operation, Disposal of Discontinued Operation, Amount Put Into Escrow						2,800,000	2,600,000
Proceeds from sales of business						24,200,000
Income from discontinued operation, before tax			8,600,000
Loss from discontinued operation, before tax			100,000
Income tax netted from Income from Discontinued Operations			$ 0	$ 889,000				$ 500,000	$ 869,000