Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v3.21.2
Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Accounts receivable allowance, net $ 234 $ 235
Inventory obsolescence reserve $ 138 $ 138
Preferred stock, par value (in usd per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Common stock, par value (in usd per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 250,000,000 250,000,000
Common stock, shares issued (in shares) 116,454,028 53,178,462
Common stock, shares outstanding (in shares) 116,454,027 53,178,461
Treasury stock (in shares) 1 1
Series 4 Convertible Preferred Stock    
Preferred stock, shares authorized (in shares) 10,415 10,415
Preferred stock, shares issued (in shares) 1 1
Preferred stock, shares outstanding (in shares) 1 1
Series 5 Convertible Preferred Stock    
Preferred stock, shares authorized (in shares) 12,000 12,000
Preferred stock, shares issued (in shares) 126 126
Preferred stock, shares outstanding (in shares) 126 126