Quarterly report pursuant to Section 13 or 15(d)

Statements of Stockholders??? Equity (Parenthetical)

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Statements of Stockholders’ Equity (Parenthetical)
$ in Thousands
3 Months Ended
Mar. 31, 2018
USD ($)
Statement of Stockholders' Equity [Abstract]  
Sale of common stock, issuance costs $ 809