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Accounts Payable and Accrued Liabilis (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Accounts Payable and Accrued Liabilities |  |
Trade payables | $ 66,000 | $ 233,000
Accrued bonuses | 916,000 | 0
Accrued legal and consulting expenses | 114,000 | 146,000
Other accrued expenses | 12,000 | 3,000
Total | $ 1,108,000 | $ 382,000

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