Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v3.21.1
Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares
Mar. 31, 2021
Dec. 31, 2020
Preferred stock, no par value
Preferred stock, shares authorized 50,000,000 50,000,000
Common stock, no par value
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 8,326,730 8,792,946
Common stock, shares outstanding 8,326,730 8,792,946
Series A Convertible Preferred Stock [Member]    
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, par value per share $ 0.001 $ 0.001
Preferred stock, stated value $ 0.0725 $ 0.0725
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Series C Convertible Preferred Stock [Member]    
Preferred stock, shares authorized 1,990,000 1,990,000
Preferred stock, par value per share
Preferred stock, stated value $ 4.00 $ 4.00
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Series D Convertible Preferred Stock [Member]    
Preferred stock, shares authorized 211,353 211,353
Preferred stock, par value per share
Preferred stock, stated value $ 0.01 $ 0.01
Preferred stock, shares issued 72,992 72,992
Preferred stock, shares outstanding 72,992 72,992
Series E Junior Participating Preferred Stock [Member]    
Preferred stock, shares authorized 100,000 100,000
Preferred stock, par value per share
Preferred stock, stated value $ 0.001 $ 0.001
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0