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Net Loss Per Common Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Numerator:    
Net loss $ (3,694) $ (3,773)
Extinguishment of preferred stock 31,806  
Accretion of preferred stock (23,931) (814)
Earnings attributable to participating preferred stock shareholders (3,839)  
Earnings attributable to common stockholders - basic 342 (4,587)
Effect of Preferred Shares (5,273)  
Earnings attributable to common stockholders - diluted $ (4,931) $ (4,587)
Denominator    
Weighted-average number of common shares used in earnings per share - basic 1,001,704 912,616
Effect of Preferred Shares 6,552,820  
Weighted-average number of common shares used in earnings per share - Diluted 7,554,524 912,616
Earnings per share - basic $ 0.34 $ (5.03)
Earnings per share - diluted $ (0.65) $ (5.03)