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Loans payable - Components (Details) - USD ($) $ in Thousands |  | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Aug. 05, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Loans payable |  |  |  |  |
Loan payable, beginning of period |  | $ 29,844 | $ 13,624 | $ 13,624 |
Contributions |  |  |  | 16,786 |
Payments |  | (20,000) | (23) |  |
Interest and final fee on Venture Loan |  | 1,808 |  |  |
Foreign exchange (gain) loss |  | (1,948) |  | (167) |
Loan payable, end of period |  | 29,527 |  | 29,844 | $ 13,624
Discount |  |  |  |  |
Discount, beginning of period |  | (17,391) | (11,948) | (11,948) |
Additional contribution discount |  | (130) |  | (7,167) |
Interest expense |  | 1,902 |  | 1,728 |
Foreign exchange (gain) loss |  | 1,236 |  | (4) |
Total discount, end of period |  | (14,383) |  | (17,391) | (11,948)
Short-term portion |  | 2,232 |  | 220 |
Long-term portion |  | 12,912 |  | 12,233 |
Total loans payable |  | 15,144 |  | 12,453 |
Directors And Officers Insurance Financing [Member] | Notes Payable, Other Payables [Member] |  |  |  |  |
Loans payable |  |  |  |  |
Contributions |  | 2,893 |  |  |
Discount |  |  |  |  |
Total loans payable |  | 2,000 |  |  |
Venture Loan [Member] | Notes Payable, Other Payables [Member] |  |  |  |  |
Loans payable |  |  |  |  |
Contributions |  | 20,000 |  |  |
Payments | $ (21,800) | (21,808) |  |  |
Other Loans [Member] | Notes Payable, Other Payables [Member] |  |  |  |  |
Loans payable |  |  |  |  |
Payments |  | (1,262) |  | (399) |
DWave System [Member] |  |  |  |  |
Loans payable |  |  |  |  |
Loan payable, beginning of period |  | 29,844 | 13,624 | 13,624 | 5,555
Contributions |  |  |  | 16,786 | 11,661
Payments |  |  |  | (31) |
Payments |  |  |  | (399) | 0
TPC debt forgiveness |  |  |  | 0 | (3,873)
Foreign exchange (gain) loss |  |  |  | (167) | 281
Loan payable, end of period |  |  |  | 29,844 | 13,624
Discount |  |  |  |  |
Discount, beginning of period |  | $ (17,391) | $ (11,948) | (11,948) | 0
Additional contribution discount |  |  |  | (7,167) | (11,199)
Interest expense |  |  |  | 1,728 | 232
Foreign exchange (gain) loss |  |  |  | (4) | (233)
Total discount, end of period |  |  |  | (17,391) | (11,948)
Short-term portion |  |  |  | 220 | 355
Long-term portion |  |  |  | 12,233 | 1,321
Total loans payable |  |  |  | 12,453 | 1,676
DWave System [Member] | TPC Loan [Member] |  |  |  |  |
Loans payable |  |  |  |  |
TPC debt forgiveness |  |  |  |  | (3,900)
Discount |  |  |  |  |
Additional contribution discount |  |  |  | $ 0 | $ (748)

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