Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)

v3.21.2
Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
[1]
Accounts receivable, allowance for doubtful accounts $ 139 $ 124
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) 10,591,716 2,171,316
Common stock, shares outstanding (in shares) 10,591,716 2,171,316
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) 38,090 35,819
Convertible preferred stock, shares outstanding (in shares) 38,090 35,819
Series C Preferred Stock [Member]    
Convertible preferred stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Convertible preferred stock, shares issued (in shares) 0 0
Convertible preferred stock, shares outstanding (in shares) 0 0
[1] The condensed consolidated balance sheet as of December 31, 2020 has been derived from the audited consolidated financial statements as of that date.