Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY

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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)
Common Stock [Member]
Capital in Excess of Par Value [Member]
Accumulated Other Comprehensive Income [Member]
Accumulated Deficit [Member]
Total
Beginning balance at Dec. 31, 2019 $ 1,000 $ 187,735,000 $ 7,000 $ (125,693,000) $ 62,050,000
Beginning balance (in shares) at Dec. 31, 2019 138,362,809        
Stock issued in connection with RSU vesting (in shares) 491,384        
Equity-based compensation $ 0 480,000 0 0 480,000
Equity-based compensation (in shares) 0        
Unrealized gain (loss) on short-term investment securities $ 0 0 (196,000) 0 (196,000)
Reclassification of losses (gains) to net loss 0 0 3,000 0 3,000
Net loss 0 0 0 (4,029,000) (4,029,000)
Ending balance at Mar. 31, 2020 $ 1,000 188,215,000 (186,000) (129,722,000) 58,308,000
Ending balance (in shares) at Mar. 31, 2020 138,854,193        
Beginning balance at Dec. 31, 2019 $ 1,000 187,735,000 7,000 (125,693,000) 62,050,000
Beginning balance (in shares) at Dec. 31, 2019 138,362,809        
Net loss         (13,307,000)
Ending balance at Sep. 30, 2020 $ 1,000 188,897,000 139,000 (139,000,000) 50,037,000
Ending balance (in shares) at Sep. 30, 2020 138,859,193        
Beginning balance at Mar. 31, 2020 $ 1,000 188,215,000 (186,000) (129,722,000) 58,308,000
Beginning balance (in shares) at Mar. 31, 2020 138,854,193        
Equity-based compensation   376,000     376,000
Unrealized gain (loss) on short-term investment securities     241,000   241,000
Reclassification of losses (gains) to net loss     (3,000)   (3,000)
Net loss       (5,057,000) (5,057,000)
Ending balance at Jun. 30, 2020 $ 1,000 188,591,000 52,000 (134,779,000) 53,865,000
Ending balance (in shares) at Jun. 30, 2020 138,854,193        
Stock issued in connection with RSU vesting (in shares) 5,000        
Equity-based compensation   306,000     306,000
Unrealized gain (loss) on short-term investment securities     87,000   87,000
Net loss       (4,221,000) (4,221,000)
Ending balance at Sep. 30, 2020 $ 1,000 188,897,000 139,000 (139,000,000) 50,037,000
Ending balance (in shares) at Sep. 30, 2020 138,859,193        
Beginning balance at Dec. 31, 2020 $ 1,000 189,439,000 74,000 (145,404,000) 44,110,000
Beginning balance (in shares) at Dec. 31, 2020 139,061,690        
Stock issued in connection with RSU vesting $ 0 0 0 0 0
Stock issued in connection with RSU vesting (in shares) 1,196,258        
Stock issued in connection with warrant exercises $ 1,000 11,781,000     11,782,000
Stock issued in connection with warrant exercises (in shares) 11,293,211        
Stock issued in connection with option exercises   1,153,000     $ 1,153,000
Stock issued in connection with option exercises (in shares) 846,342       846,000
Equity-based compensation $ 0 507,000 0 0 $ 507,000
Equity-based compensation (in shares) 0        
Unrealized gain (loss) on short-term investment securities $ 0 0 (32,000) 0 (32,000)
Net loss 0 0 0 (5,030,000) (5,030,000)
Ending balance at Mar. 31, 2021 $ 2,000 202,880,000 42,000 (150,434,000) 52,490,000
Ending balance (in shares) at Mar. 31, 2021 152,397,501        
Beginning balance at Dec. 31, 2020 $ 1,000 189,439,000 74,000 (145,404,000) 44,110,000
Beginning balance (in shares) at Dec. 31, 2020 139,061,690        
Net loss         (18,644,000)
Ending balance at Sep. 30, 2021 $ 2,000 243,087,000 (27,000) (164,048,000) 79,014,000
Ending balance (in shares) at Sep. 30, 2021 162,735,483        
Beginning balance at Mar. 31, 2021 $ 2,000 202,880,000 42,000 (150,434,000) 52,490,000
Beginning balance (in shares) at Mar. 31, 2021 152,397,501        
Stock issued in connection with RSU vesting, net of shares withheld for taxes   (469,000)     (469,000)
Stock issued in connection with RSU vesting, net of shares withheld for taxes (in shares) 200,103        
Stock issued in connection with option exercises   106,000     $ 106,000
Stock issued in connection with option exercises (in shares) 87,879       88,000
Stock issued in connection with capital raise   38,206,000     $ 38,206,000
Stock issued in connection with capital raise (in shares) 10,000,000        
Equity-based compensation   1,245,000     1,245,000
Unrealized gain (loss) on short-term investment securities     (41,000)   (41,000)
Net loss       (4,174,000) (4,174,000)
Ending balance at Jun. 30, 2021 $ 2,000 241,968,000 1,000 (154,608,000) 87,363,000
Ending balance (in shares) at Jun. 30, 2021 162,685,483        
Stock issued in connection with RSU vesting (in shares) 50,000        
Equity-based compensation   1,119,000     1,119,000
Unrealized gain (loss) on short-term investment securities     (28,000)   (28,000)
Net loss       (9,440,000) (9,440,000)
Ending balance at Sep. 30, 2021 $ 2,000 $ 243,087,000 $ (27,000) $ (164,048,000) $ 79,014,000
Ending balance (in shares) at Sep. 30, 2021 162,735,483