Quarterly report pursuant to Section 13 or 15(d)

Warrants - Outstanding (Details)

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Warrants - Outstanding (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 17, 2020
Dec. 19, 2019
Nov. 04, 2019
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
May 31, 2019
Dec. 31, 2020
Jun. 30, 2021
Dec. 31, 2020
Warrants                    
Warrants outstanding (in shares)                 9,916,996 2,830,309
Warrants acquired (in shares)             118,804      
Issued (in shares) 167,206 156,250 1,834   95,043 331,771     548,111 8,321,412
Exercised (in shares)               (281,282) (389,881) (322,949)
Terminated/Expired (in shares)       (418,721)         (641,642) (911,776)
Warrants outstanding (in shares)       9,916,996       9,916,996 9,433,584 9,916,996
Exercise Price                    
Warrants outstanding (in dollars per share)                 $ 7.32 $ 19.38
Warrants acquired (in dollars per share)             $ 23.40      
Issued (in dollars per share)                 8.70 4.62
Warrants exercised (in dollars per share)                 4.52 3.48
Terminated/Expired (in dollars per share)                 24.64 18.42
Warrants outstanding (in dollars per share)       $ 7.32       $ 7.32 $ 5.92 $ 7.32
Warrants outstanding, intrinsic value       $ 23.8       $ 23.8 $ 0.0 $ 23.8