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Consolidated Balance Sheets (Parenthetical) - $ / shares
Dec. 31, 2020
Dec. 31, 2019
Statement Of Financial Position [Abstract]    
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 10,000,000 10,000,000
Preferred stock, shares issued (in shares) 20,631 41,517
Preferred stock, shares outstanding (in shares) 20,631 41,517
Common stock, par value (in dollars per share) [1] $ 0.01 $ 0.01
Common stock, shares authorized (in shares) [1] 40,000,000 40,000,000
Common stock, shares issued (in shares) [1] 5,996,101 67,091
Common stock, shares outstanding (in shares) [1] 5,996,101 67,091
[1] reflects, a one-for-seven hundred (1:700) reverse stock split effected on December 24, 2019.