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Consolidated balance sheets (Parenthetical) - $ / shares
Mar. 31, 2021
Dec. 31, 2020
Statement of Financial Position [Abstract]    
Preferred stock par value (USD per share) $ 0.01 $ 0.01
Preferred stock authorized (shares) 50,000,000 50,000,000
Preferred stock issued (shares) 0 0
Common stock par value (USD per share) $ 0.01 $ 0.01
Common stock authorized (shares) 22,500,000 22,500,000
Common stock issued (shares) 12,899,660 12,020,164
Common stock outstanding (shares) 12,899,660 12,020,164