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Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($)
$ in Thousands
 3 Months Ended
Jun. 30, 2020
Mar. 31, 2019
Stock issuance costs   $ 5,587
ATM    
Stock issuance costs $ 2,176  
Public Stock Offering    
Stock issuance costs $ 10,809