Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Stockholders??? Equity (Parenthetical)

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Condensed Consolidated Statements of Stockholders’ Equity (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Sale of common stock, issuance costs   $ 809
March 2019    
Sale of common stock, issuance costs $ 617