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Accrued Liabilities
 6 Months Ended
Jun. 30, 2023
Payables and Accruals [Abstract]  
Accrued Liabilities Accrued Liabilities
Current accrued liabilities are as follows (in thousands):
 June 30, 2023December 31, 2022
Severance costs$1,314 $2,617 
Payroll and benefits525 684 
Legal costs816 447 
Contingent liability for earn-out provision260 583 
Deferred revenue, current409 655 
Taxes other than income taxes 946 1,884 
Other908 2,114 
Total current accrued liabilities$5,178 $8,984