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Severance and other related charges - Additional Information (Details)
3 Months Ended
Mar. 31, 2023
USD ($)
Selling, General and Administrative  
Defined Benefit Plan Disclosure [Line Items]  
Postemployment benefits outstanding payable $ 301,000
Two Former Employees  
Defined Benefit Plan Disclosure [Line Items]  
Postemployment benefits liability $ 332,000