Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Parenthetical)

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CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Parenthetical)
$ in Thousands
 9 Months Ended
Sep. 30, 2015
USD ($)
$ / shares
Issuance of common stock in exchange for exercise of warrants (in dollars per share) $ 4.25
Stock Issued in February 2015 [Member]  
Issuance of common stock (in dollars per share) $ 5.85
Payments of Stock Issuance Costs | $ $ 2,115
Stock Issued in July 2015 [Member]  
Issuance of common stock (in dollars per share) $ 7.50
Payments of Stock Issuance Costs | $ $ 1,369