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Consolidated Balance Sheets (Parenthetical) - $ / shares
Jun. 30, 2021
Dec. 31, 2020
Consolidated Balance Sheets    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized 50,000,000 10,000,000
Common stock, shares issued 8,339,487 6,280,856
Common stock, shares outstanding 7,721,671 5,663,040
Treasury stock, shares 617,816 617,816