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Condensed Unaudited Consolidated Balance Sheets (Parenthetical) - $ / shares
Sep. 30, 2020
Dec. 31, 2019
Condensed Unaudited Consolidated Balance Sheets    
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, shares authorized 80,000,000 80,000,000
Common stock, shares issued 32,338,302 32,338,302
Treasury stock, shares 1,486,526 1,164,257