Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited)

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Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
At the Market Offering [Member]
Preferred Stock [Member]
At the Market Offering [Member]
Common Stock [Member]
At the Market Offering [Member]
Additional Paid-in Capital [Member]
At the Market Offering [Member]
AOCI Attributable to Parent [Member]
At the Market Offering [Member]
Retained Earnings [Member]
At the Market Offering [Member]
Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2022             16 931        
Balance at Dec. 31, 2022             $ 0 $ 1 $ 318,603 $ (254) $ (290,421) $ 27,929
Net loss             0 0 0 0 (9,207) (9,207)
Stock based compensation expense             0 0 1,932 0 0 1,932
Foreign currency translation adjustment             0 0 0 45 0 45
Unrealized gain on investments             $ 0 $ 0 0 72 0 72
Issuance of common stock resulting from purchase of employee stock purchase plan shares (in shares)             0 1        
Issuance of common stock resulting from purchase of employee stock purchase plan shares             $ 0 $ 0 52 0 0 52
Issuance of common stock pursuant to ATM offering program, net of $0.7 million in offering costs (in shares) 0 303                    
Issuance of common stock pursuant to ATM offering program, net of $0.7 million in offering costs $ 0 $ 0 $ 19,675 $ 0 $ 0 $ 19,675            
Balance at Jun. 30, 2023             0 1 340,262 (137) (299,628) 40,498
Stock based compensation expense             $ 0 $ 0 (1,932) 0 0 (1,932)
Balance (in shares) at Jun. 30, 2023             16 1,236        
Unrealized gain on investments             $ 0 $ 0 0 72 0 72
Balance (in shares) at Mar. 31, 2023             16 931        
Balance at Mar. 31, 2023             $ 0 $ 1 319,487 (426) (303,604) 15,458
Net loss             0 0 0 0 3,976 3,976
Stock based compensation expense             0 0 1,048 0 0 1,048
Foreign currency translation adjustment             0 0 0 287 0 287
Unrealized gain on investments             $ 0 $ 0 0 2 0 2
Issuance of common stock resulting from purchase of employee stock purchase plan shares (in shares)             0 1        
Issuance of common stock resulting from purchase of employee stock purchase plan shares             $ 0 $ 0 52 0 0 52
Issuance of common stock pursuant to ATM offering program, net of $0.7 million in offering costs (in shares) 0 303                    
Issuance of common stock pursuant to ATM offering program, net of $0.7 million in offering costs $ 0 $ 0 $ 19,675 $ 0 $ 0 $ 19,675            
Balance at Jun. 30, 2023             0 1 340,262 (137) (299,628) 40,498
Stock based compensation expense             $ 0 $ 0 (1,048) 0 0 (1,048)
Balance (in shares) at Jun. 30, 2023             16 1,236        
Unrealized gain on investments             $ 0 $ 0 0 2 0 2
Balance (in shares) at Dec. 31, 2023             16 1,237        
Balance at Dec. 31, 2023             $ 0 $ 1 341,693 28 (314,964) 26,758
Net loss             0 0 0 0 (8,482) (8,482)
Stock based compensation expense             0 0 893 0 0 893
Foreign currency translation adjustment             0 0 0 (463) 0 (463)
Unrealized gain on investments             0 0 0 (1) 0 (1)
Balance at Jun. 30, 2024             0 1 342,586 (436) (323,446) 18,705
Stock based compensation expense             $ 0 $ 0 (893) 0 0 (893)
Round-Up shares from the 1-for-80 reverse split effective April 23, 2024 (in shares)             0 83        
Balance (in shares) at Jun. 30, 2024             16 1,320        
Unrealized gain on investments             $ 0 $ 0 0 (1) 0 (1)
Balance (in shares) at Mar. 31, 2024             16 1,237        
Balance at Mar. 31, 2024             $ 0 $ 1 342,165 (346) (319,856) 21,964
Net loss             0 0 0 0 (3,590) (3,590)
Stock based compensation expense             0 0 421 0 (0) 421
Foreign currency translation adjustment             0 0 0 (90) 0 (90)
Balance at Jun. 30, 2024             0 1 342,586 (436) (323,446) 18,705
Stock based compensation expense             $ 0 $ 0 $ (421) $ 0 $ 0 $ (421)
Round-Up shares from the 1-for-80 reverse split effective April 23, 2024 (in shares)             0 83        
Balance (in shares) at Jun. 30, 2024             16 1,320