Assets Held for Sale and Discontinued Operations (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Cash $ 48  
Accounts receivable 102  
Goodwill at carrying amount of $208, net of $208 loss on impairment 0  
Acquired technology at carrying amount of $10,133, net of $2,451 accumulated amortization and $7,045 loss on impairment 637  
Total assets held for sale $ 787 $ 0