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Long-term obligations (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Long-term obligations    
Pension obligations - accrued pension liability $ 6,239 $ 5,906
Settlement agreement   50
Microsoft licenses 1,170  
Total long-term obligations 7,409 5,956
Less: Current portion of long-term obligations 1,121 877
Totals 6,288 $ 5,079
Microsoft licenses, Amount payable annually over the term of the agreement $ 400