v3.20.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Statement Of Financial Position [Abstract]    
Trade accounts receivable, allowance for doubtful accounts $ 39,000 $ 55,000
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares issued 25,000 322,000
Preferred stock, shares outstanding 25,000 322,000
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 150,000,000 150,000,000
Common stock, shares issued 43,777,000 7,793,000
Common stock, shares outstanding 43,776,992 7,793,000