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Capitalization - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended
Aug. 31, 2019
Mar. 31, 2021
Mar. 31, 2020
Warrants      
Consideration received on transaction     $ 13.5
Number of shares issued in transaction (in shares)   0 262,205
Maximum      
Warrants      
Consideration received on transaction $ 125.0    
Value of remaining shares available to be issued and sold in transaction   $ 93.0  
Weighted Average      
Warrants      
Sale of stock, weighted average price per share (in USD per share)     $ 52.81