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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) (Parenthetical) - $ / shares
Sep. 30, 2021
Jun. 30, 2021
Sep. 30, 2020
Jun. 30, 2020
Statement of Stockholders' Equity [Abstract]        
Common stock, par value (USD per share) $ 0.01 $ 0.01 $ 0.01 $ 0.01