Commitments and Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Rent expense from continuing operations	$ 0.4	$ 0.5	$ 0.8
Media [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Business disposal, selling price	20.0
Business disposal, cash deposited in escrow by buyer	3.0
Business disposal, liability for breaches of representations and warranties made in the Purchase Agreement, maximum	$ 10.0