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Accrued Liabilities
 3 Months Ended
Mar. 31, 2023
Payables and Accruals [Abstract]  
Accrued Liabilities Accrued Liabilities
Current accrued liabilities are as follows (in thousands):
 March 31, 2023December 31, 2022
Severance costs$4,375 $2,617 
Payroll and benefits919 684 
Legal costs1,312 447 
Contingent liability for earn-out provision225 583 
Deferred revenue, current502 655 
Taxes other than income taxes 1,545 1,884 
Other992 2,114 
Total current accrued liabilities$9,870 $8,984