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STOCKHOLDERS' EQUITY - At-the-Market Equity Offering Program - Additional Information (Details) - Sales Agreement - USD ($)
$ / shares in Units, $ in Millions
6 Months Ended 12 Months Ended
Aug. 10, 2018
Jun. 30, 2022
Dec. 31, 2020
Class Of Warrant Or Right [Line Items]      
Sale of stock issue date     Aug. 10, 2018
Common Stock      
Class Of Warrant Or Right [Line Items]      
Sales of common stock, value $ 50.0    
Common stock issued and sold   0 422,701
Common stock, average price per share     $ 29.69
Net proceeds after deducting sales commissions and offering costs payable     $ 12.1