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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) |

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