Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parentheticals)

v3.20.4
Consolidated Balance Sheets (Parentheticals) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Accounts receivable, allowance for doubtful accounts $ 124 $ 407
Convertible preferred stock, shares authorized (in shares) 10,000,000 10,000,000
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, shares authorized (in shares) 75,000,000 75,000,000
Common stock, shares issued (in shares) 2,171,316 707,571
Common stock, shares outstanding (in shares) 2,171,316 707,571
Series A Preferred Stock [Member]    
Convertible preferred stock, shares authorized (in shares) 547,345  
Convertible preferred stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Convertible preferred stock, shares issued (in shares) 0 185,218
Convertible preferred stock, shares outstanding (in shares) 0 185,218
Series B Preferred Stock [Member]    
Convertible preferred stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Convertible preferred stock, shares issued (in shares) 35,819 31,678
Convertible preferred stock, shares outstanding (in shares) 35,819 31,678