Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Jun. 30, 2022
Dec. 31, 2021
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 63,958,633 63,953,993
Common stock, shares issued (in shares) 34,520,068 34,210,013
Common stock, shares outstanding (in shares) 34,520,068 34,210,013
Series D Preferred Stock    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, liquidation preference (in dollars per share) $ 25.00 $ 25.00
Preferred stock, shares authorized (in shares) 3,600,000 3,600,000
Preferred stock, shares issued (in shares) 2,415,000 2,415,000
Preferred stock, shares outstanding (in shares) 2,415,000 2,415,000
Series B Preferred Stock    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, liquidation preference (in dollars per share) $ 25.00 $ 25.00
Preferred stock, shares authorized (in shares) 6,456,065 6,456,065
Preferred stock, shares issued (in shares) 5,956,065 5,956,065
Preferred stock, shares outstanding (in shares) 5,956,065 5,956,065
Series C Preferred Stock    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, liquidation preference (in dollars per share) $ 25.00 $ 25.00
Preferred stock, shares authorized (in shares) 25,985,302 25,989,942
Preferred stock, shares issued (in shares) 6,529,895 3,493,333
Preferred stock, shares outstanding (in shares) 6,529,895 3,493,333