Quarterly report pursuant to Section 13 or 15(d)

Net Income (Loss) Per Share (Schedule of Basic and Diluted Net Income (Loss) Per Share) (Details)

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Net Income (Loss) Per Share (Schedule of Basic and Diluted Net Income (Loss) Per Share) (Details) (USD $)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Numerator:          
Net profit (loss) used to compute net loss per share: Basic $ 56,126,982 $ (3,399,956) $ (25,638,377) $ (7,196,710)  
Adjustments for change in fair value of warrant liability (60,457,700)           
Diluted $ (4,330,718) $ (3,399,956) $ (25,638,377) $ (7,196,710)  
Denominator:          
Weighted-average common shares outstanding used in computing basic net income (loss) per share: Basic 78,488,087 21,080,414 72,688,073 20,861,127  
Dilutive effect of warrants 9,593,643           
Dilutive effect of stock options 6,681,210           
Diluted 94,772,411 21,080,414 72,688,073 20,861,127  
Net income (loss) per share, basic $ 0.72 $ (0.16) $ (0.35) $ (0.34)  
Net income (loss) per share, diluted $ (0.05) $ (0.16) $ (0.35) $ (0.34)  
Common stock issued for acquisition         5,280,368