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Consolidated Balance Sheets (Parenthetical) - $ / shares
Dec. 31, 2019
Dec. 31, 2018
Preferred stock, par value (in usd per share) $ 0.01 $ 0.01
Preferred stock, authorized (in shares) 10,000,000 10,000,000
Common stock, par value (in usd per share) $ 0.01 $ 0.01
Common stock, authorized (in shares) 40,000,000 40,000,000
Common stock, issued (in shares) 5,076,593 4,424,205
Common stock, outstanding (in shares) 5,008,846 4,356,459
Treasury stock (in shares) 67,746 67,746
Convertible Preferred Stock    
Preferred stock, par value (in usd per share) $ 0.01  
Preferred stock, authorized (in shares) 1,517,500  
Preferred stock, issued (in shares) 538,000  
Preferred stock, outstanding (in shares) 538,000