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Restatement of Quarterly Financial Information (Restated and Unaudited) - CONSOLIDATED STATEMENTS OF INCOME (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
Operating expenses:                
Research and development     $ 3,923     $ 10,590 $ 20,274 $ 14,928
Total operating expenses     5,704     16,110 27,656 22,389
Operating loss     (5,704)     (16,110) (27,656) (22,389)
Loss before taxes     (5,691)     (15,949) (25,915) (22,185)
Income tax benefit     934     2,586 (4,717) (3,728)
Deemed dividend on accretion of redeemable common stock $ (102) $ (33)   $ (33) $ (135)   (135)  
Net loss $ (5,096) $ (4,575) $ (4,757) $ (8,683) $ (13,779) $ (13,363) (21,198) (18,457)
Net loss applicable to common shareholders, diluted             $ (21,399) $ (18,658)
Basic and diluted earnings per common share:                
Net loss per share - basic     $ (0.51)     $ (1.58)   $ (2.09)
Net loss per share - diluted     $ (0.51)     $ (1.58)   (2.09)
Common Stock                
Basic and diluted earnings per common share:                
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)
Redeemable Common Stock                
Operating expenses:                
Deemed dividend on accretion of redeemable common stock $ (102) $ (33)   $ (33) $ (135)   $ (135)  
Basic and diluted earnings per common share:                
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)  
Error in the accounting treatment of contract deposit-related invoices. | As previously reported                
Operating expenses:                
Research and development     $ 4,217     $ 10,884   $ 15,477
Total operating expenses     5,998     16,404   22,938
Operating loss     (5,998)     (16,404)   (22,938)
Loss before taxes     (5,985)     (16,243)   (22,734)
Income tax benefit     998     2,650   (3,847)
Net loss     $ (4,987)     $ (13,593)   (18,887)
Net loss applicable to common shareholders, diluted             $ (21,399) $ (19,088)
Basic and diluted earnings per common share:                
Net loss per share - basic     $ (0.54)     $ (1.60)   $ (2.14)
Net loss per share - diluted     $ (0.54)     $ (1.60)   $ (2.14)
Error in the accounting treatment of contract deposit-related invoices. | As previously reported | Common Stock                
Basic and diluted earnings per common share:                
Net loss per share - basic (0.42) (0.46)   (0.87) (1.29)   $ (1.90)  
Net loss per share - diluted (0.42) (0.46)   (0.87) (1.29)   (1.90)  
Error in the accounting treatment of contract deposit-related invoices. | Adjustments                
Operating expenses:                
Research and development     $ (294)     $ (294)   $ (549)
Total operating expenses     (294)     (294)   (549)
Operating loss     294     294   549
Loss before taxes     294     294   549
Income tax benefit     (64)     (64)   119
Net loss     $ 230     $ 230   430
Net loss applicable to common shareholders, diluted               $ 430
Basic and diluted earnings per common share:                
Net loss per share - basic     $ 0.03     $ 0.02   $ 0.05
Net loss per share - diluted     $ 0.03     $ 0.02   $ 0.05
Error in the accounting treatment of contract deposit-related invoices. | Adjustments | Common Stock                
Basic and diluted earnings per common share:                
Net loss per share - basic (0.01)     (0.01) (0.01)   (0.01)  
Net loss per share - diluted (0.01)     (0.01) (0.01)   (0.01)  
Error in the accounting treatment of contract deposit-related invoices. | Adjustments | Redeemable Common Stock                
Basic and diluted earnings per common share:                
Net loss per share - basic (0.38) 0.78   1.59 (1.10)   (1.82)  
Net loss per share - diluted $ (0.38) $ 0.78   $ 1.59 $ (1.10)   $ (1.82)