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Net Loss Per Share (Basic and Diluted Net Loss Per Share) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Sep. 30, 2021
Jun. 30, 2022
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2022
Dec. 31, 2021
Numerator:                
Net loss $ (5,096) $ (4,575) $ (4,757) $ (8,683) $ (13,779) $ (13,363) $ (21,198) $ (18,457)
Dividend on convertible exchangeable preferred shares (50) (50)   (101) (151)   (201) (201)
Net loss attributable to common shareholders (5,146) (4,625)   (8,784) (13,930)   (21,399) (18,658)
Net loss attributable to common shareholders             (21,399) (18,658)
Deemed dividend on accretion of redeemable common stock (102) (33)   (33) (135)   (135)  
Remaining undistributed loss (5,248) (4,658)   (8,817) (14,065)   (21,534) $ (18,658)
Denominator:                
Net loss per share - basic     $ (0.51)     $ (1.58)   $ (2.09)
Net loss per share - diluted     $ (0.51)     $ (1.58)   $ (2.09)
Common Stock                
Numerator:                
Allocation of undistributed loss $ (4,235) $ (4,646)   $ (8,805) $ (13,040)   (18,872) $ (18,658)
Net loss attributable to common shareholders             $ (18,872) $ (18,658)
Denominator:                
Weighted average common shares outstanding basic 9,937,958 10,109,466   10,051,622 10,013,317   9,864,296 8,926,173
Net loss per share - basic $ (0.43) $ (0.46)   $ (0.88) $ (1.30)   $ (1.91) $ (2.09)
Net loss per share - diluted (0.43) (0.46)   (0.88) (1.30)   (1.91) (2.09)
Undistributed loss $ (0.43) $ (0.46)   $ (0.88) $ (1.30)   $ (1.91) (2.09)
Redeemable Common Stock                
Numerator:                
Allocation of undistributed loss $ (1,013) $ (12)   $ (12) $ (1,025)   $ (2,662)  
Net loss attributable to common shareholders             (2,527)  
Deemed dividend on accretion of redeemable common stock $ (102) $ (33)   $ (33) $ (135)   $ (135)  
Denominator:                
Weighted average common shares outstanding basic 2,376,721 26,623   13,385 809,821   1,391,381  
Net loss per share - basic $ (0.38) $ 0.78   $ 1.59 $ (1.10)   $ (1.82) $ 0
Net loss per share - diluted (0.38) 0.78   1.59 (1.10)   (1.82)  
Distributed earnings 0.04 1.24     0.17   0.09  
Undistributed loss $ (0.42) $ (0.46)   $ (0.88) $ (1.27)   $ (1.91)