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Non-cash operating items (Tables)
6 Months Ended
Jun. 30, 2023
Disclosure Changes In Non Cash Operating Items [Abstract]  
Schedule of Changes in Non-Cash Operating Items
The changes in non-cash operating items consist of the following:
Three months ended June 30Six months ended June 30
2023202220232022
Accounts receivable$21,450 $(8,641)$35,213 $(49,253)
Fuel and natural gas in storage(12,837)(23,362)19,657 (7,128)
Supplies and consumables inventory(11,678)(3,006)(22,454)(10,775)
Income taxes recoverable5,134 (861)5,683 2,071 
Prepaid expenses13,231 (5,203)6,183 (12,553)
Accounts payable71,253 48,424 18,033 26,759 
Accrued liabilities38,215 (22,585)(88,895)30,711 
Current income tax liability(1,039)(1,350)2,563 853 
Asset retirements and environmental obligations363 (10,855)(706)(11,354)
Net regulatory assets and liabilities(11,712)(9,201)(28,633)(54,119)
$112,380 $(36,640)$(53,356)$(84,788)