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Revenue
6 Months Ended
Jun. 30, 2023
Revenue from Contract with Customer [Abstract]  
Revenue
9. Revenue:
The Company recognized revenue from the following sources:
Three Months Ended June 30,Six Months Ended June 30,
Revenue type2023202220232022
Software licensing$— $$400 $6,711 
Data processing services42 220 321 280 
Renewable energy storage systems (Note a)1,272 — 1,272 — 
Total$1,314 $229 $1,993 $6,991 
(a)At June 30, 2023, the Company had a contract liability of $2.8 million (December 31, 2022 — $2.8 million) relating to the sale of renewable energy storage systems.