Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical)

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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2021
Payments of stock issuance costs   $ 0.4
At the market offering    
Payments of stock issuance costs $ 0.4 0.4
Private placement    
Payments of stock issuance costs $ 0.1 $ 0.1