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Condensed Consolidated Statements of Stockholders’ Equity (Unaudited) - USD ($)
$ in Thousands
Series A Special Voting
Preferred Stock
Common Stock
Exchangeable Shares
Additional Paid-In Capital
Accumulated Other Comprehensive Loss
Accumulated Deficit
Total
Balance at Dec. 31, 2021 $ 12 $ 159,256 $ (117,199) $ 42,069
Balance (in Shares) at Dec. 31, 2021 12,284,000 9,295,000        
Exchange of exchangeable shares
Exchange of exchangeable shares (in Shares)   100,000 (100,000)        
Issuance of common stock under stock plan, net (9) (9)
Issuance of common stock under stock plan, net (in Shares)   9,000        
Stock-based compensation 1,171 1,171
Unrealized gain (loss) on available-for-sale securities (37) (37)
Net loss (6,754) (6,754)
Balance at Mar. 31, 2022 $ 12 160,418 (37) (123,953) 36,440
Balance (in Shares) at Mar. 31, 2022 12,393,000 9,195,000        
Balance at Dec. 31, 2021 $ 12 159,256 (117,199) 42,069
Balance (in Shares) at Dec. 31, 2021 12,284,000 9,295,000        
Net loss             (17,805)
Balance at Sep. 30, 2022 $ 13 163,551 (36) (135,004) 28,524
Balance (in Shares) at Sep. 30, 2022 12,757,000 9,112,000        
Balance at Mar. 31, 2022 $ 12 160,418 (37) (123,953) 36,440
Balance (in Shares) at Mar. 31, 2022 12,393,000 9,195,000        
Issuance of common stock under stock plan, net $ 1 (51) (50)
Issuance of common stock under stock plan, net (in Shares) 244,000        
Stock-based compensation 1,738 1,738
Unrealized gain (loss) on available-for-sale securities (4) (4)
Net loss (7,043) (7,043)
Balance at Jun. 30, 2022 $ 13 162,105 (41) (130,996) 31,081
Balance (in Shares) at Jun. 30, 2022 12,637,000 9,195,000        
Exchange of exchangeable shares
Exchange of exchangeable shares (in Shares)   83,000 (83,000)        
Issuance of common stock under stock plan, net (2) (2)
Issuance of common stock under stock plan, net (in Shares)   37,000        
Stock-based compensation 1,448 1,448
Unrealized gain (loss) on available-for-sale securities 5 5
Net loss (4,008) (4,008)
Balance at Sep. 30, 2022 $ 13 163,551 (36) (135,004) 28,524
Balance (in Shares) at Sep. 30, 2022 12,757,000 9,112,000        
Balance at Dec. 31, 2022 $ 14 164,865 (25) (149,597) 15,257
Balance (in Shares) at Dec. 31, 2022 14,270,000 9,107,000        
Exchange of exchangeable shares $ 1 (1)
Exchange of exchangeable shares (in Shares) 310,000 (310,000)        
Stock-based compensation 1,307 1,307
Unrealized gain (loss) on available-for-sale securities 14 14
Net loss (3,148) (3,148)
Balance at Mar. 31, 2023 $ 15 166,171 (11) (152,745) 13,430
Balance (in Shares) at Mar. 31, 2023 14,580,000 8,797,000        
Balance at Dec. 31, 2022 $ 14 164,865 (25) (149,597) $ 15,257
Balance (in Shares) at Dec. 31, 2022 14,270,000 9,107,000        
Issuance of common stock upon exercise of warrants (in Shares)             2,497,000
Net loss             $ (7,857)
Balance at Sep. 30, 2023 $ 25 169,184 (157,454) 11,755
Balance (in Shares) at Sep. 30, 2023 25,308,000 5,107,000        
Balance at Mar. 31, 2023 $ 15 166,171 (11) (152,745) 13,430
Balance (in Shares) at Mar. 31, 2023 14,580,000 8,797,000        
Exchange of exchangeable shares $ 3 (3)
Exchange of exchangeable shares (in Shares) 3,066,000 (3,066,000)        
Issuance of common stock under stock plan, net (36) (36)
Issuance of common stock under stock plan, net (in Shares) 157,000        
Sale of common stock and warrants $ 2 3,546 3,548
Sale of common stock and warrants (in Shares) 2,250,000        
Issuance of common stock upon exercise of warrants $ 2 19 21
Issuance of common stock upon exercise of warrants (in Shares) 2,117,000        
Initial recognition of fair value of warrant liability (3,162) (3,162)
Stock-based compensation 1,319 1,319
Unrealized gain (loss) on available-for-sale securities 7 7
Net loss (4,086) (4,086)
Balance at Jun. 30, 2023 $ 22 167,854 (4) (156,831) 11,041
Balance (in Shares) at Jun. 30, 2023 22,170,000 5,731,000        
Exchange of exchangeable shares $ 1 (1)
Exchange of exchangeable shares (in Shares) 624,000 (624,000)        
Issuance of common stock under stock plan, net
Issuance of common stock under stock plan, net (in Shares)   17,000        
Issuance of common stock upon exercise of warrants $ 2 23 25
Issuance of common stock upon exercise of warrants (in Shares)   2,497,000        
Stock-based compensation 1,308 1,308
Unrealized gain (loss) on available-for-sale securities 4 4
Net loss (623) (623)
Balance at Sep. 30, 2023 $ 25 $ 169,184 $ (157,454) $ 11,755
Balance (in Shares) at Sep. 30, 2023 25,308,000 5,107,000