Assets Held for Sale and Discontinued Operations (Disposal Group Not Discontinued Operation Income Statement Disclosures) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 31 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Revenue $ 224 $ 269 $ 493
Operating expenses (3,334) (2,666) (6,000)
Loss on impairment (7,253) 0 (7,253)
Operating loss (10,363) (2,397) (12,760)
Non-operating income (expense) (65) 20 (45)
Loss before taxes on income (10,428) [1] (2,377) [1] (12,805) [1]
Income tax expense (257) (55) (312)
Loss from discontinued operations $ (10,685) $ (2,432) $ (13,117)
[1] Includes stock-based compensation expense