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Consolidated Statements of Stockholders' Equity (Deficit) - USD ($)
$ in Thousands
Common Stock [Member]
Preferred Stock [Member]
Series A Preferred Stock [Member]
Preferred Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2021 43,656,169 2,300 329      
Balance at Dec. 31, 2021 $ 435 $ 1 $ 1 $ 613,572 $ (573,400) $ 40,609
Issuance of shares pursuant to direct offerings (in shares) 11,857,140 0 0      
Issuance of shares pursuant to direct offerings $ 118 $ 0 $ 0 21,518 0 21,636
Dividends paid and declared $ 0 $ 0 $ 0 0 (5,106) (5,106)
Stock-based compensation expense (in shares) 310,501 0 0      
Stock-based compensation expense $ 3 $ 0 $ 0 1,873 0 1,876
Net loss $ 0 $ 0 $ 0 0 (24,792) (24,792)
Balance (in shares) at Dec. 31, 2022 55,823,810 2,300 329      
Balance at Dec. 31, 2022 $ 556 $ 1 $ 1 636,963 (603,298) 34,223
Issuance of shares pursuant to direct offerings (in shares) 10,500,000 0 0      
Issuance of shares pursuant to direct offerings $ 105 $ 0 $ 0 38,385 0 38,490
Dividends paid and declared $ 0 $ 0 $ 0 0 (5,106) (5,106)
Stock-based compensation expense (in shares) 386,985 0 0      
Stock-based compensation expense $ 4 $ 0 $ 0 1,232 0 1,236
Net loss 0 0 0 0 (31,446) (31,446)
Reclassification of derivative liability $ 0 $ 0 $ 0 2,570 0 2,570
Balance (in shares) at Dec. 31, 2023 66,710,795 2,300 329      
Balance at Dec. 31, 2023 $ 665 $ 1 $ 1 $ 679,150 $ (639,850) $ 39,967