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Severance and other related charges - Additional Information (Details) | 6 Months Ended
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Jun. 30, 2023 USD ($)
Selling, General and Administrative |
Defined Benefit Plan Disclosure [Line Items] |
Postemployment benefits outstanding payable | $ 207,000
Two Former Employees |
Defined Benefit Plan Disclosure [Line Items] |
Postemployment benefits liability | $ 332,000

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