Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical)

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical)
Dec. 31, 2016
$ / shares
Exercise price of warrants (in dollars per share) $ 5.00
Common stock issued for licenses (in dollars per share) 3.27
Restricted Common Stock [Member]  
Share price (in dollars per share) 2.85
$7.00 Common Stock Issuance [Member]  
Share price (in dollars per share) 7.00
$6.44 Common Stock Issuance [Member]  
Share price (in dollars per share) $ 6.44