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Leases (Tables)
 12 Months Ended
Dec. 31, 2022
Presentation of leases for lessee [abstract]  
Right-of-use assets
The following table summarizes our right-of-use assets activity for the years ended December 31:
20222021
As at beginning of year$584 $372 
Additions— 210 
Lease modification— 324 
Depreciation expense(299)(322)
Foreign exchange impact11 — 
As at end of year$296 $584 
Lease liabilities
The following table summarizes our lease liabilities activity for the years ended December 31:
20222021
As at beginning of year$655 $402 
Additions— 203 
Lease modification— 324 
Payment of lease liabilities(381)(366)
Interest expense on lease liabilities80 92 
Foreign exchange impact19 — 
As at end of year$373 $655 
Total undiscounted lease liability
Our total undiscounted lease liability as at December 31, 2022 was as follows:
December 31, 2022
Less than one year$251 
One to five years196 
More than five years— 
Total undiscounted lease liability $447