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Earnings (Loss) Per Share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended 126 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Summary of basic and diluted loss per share          
Net income (loss) $ (1,146) $ 294 $ (2,553) $ (1,912)  
Net income (loss) available to common stockholders (1,146) 294 (2,553) (1,912) (67,253)
Weighted average shares outstanding 12,166,301 10,129,328 12,166,301 9,477,206  
Less: Weighted-average shares of unvested common stock (16,698) (16,698) (16,698) (16,698)  
Total weighted-average shares used in computing net income (loss) per share attributed to common stockholders 12,166,301 10,129,328 12,166,301 9,477,206  
Basic earnings (loss) per share $ (0.09) $ 0.03 $ (0.21) $ (0.20)  
Diluted          
Net income (loss) (1,146) 294 (2,553) (1,912)  
Net income (loss) available to common shareholders $ (2,292) $ 294 $ (2,553) $ (1,912)  
Weighted average shares outstanding 12,166,301 10,129,328 12,166,301 9,477,206  
Dilutive impact of stock plans 0 120,850 0 0  
Dilutive shares outstanding 12,166,301 10,250,178 12,166,301 9,477,206  
Diluted earnings (loss) per share $ (0.09) $ 0.03 $ (0.21) $ (0.20)