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Bank call loans
12 Months Ended
Dec. 31, 2023
Bank Call Loans [Abstract]  
Bank call loans Bank call loans
Bank call loans, primarily payable on demand, bear interest at various rates. Details of the bank call loans are as follows:
(Expressed in thousands, except percentages)  
 20232022
Year-end balance$— $— 
Weighted interest rate (at end of year)— %— %
Maximum balance (at any month-end)131,900 179,200 
Average amount outstanding (during the year)49,387 79,366 
Average interest rate (during the year)4.20 %2.18 %
Interest expense for the year ended December 31, 2023 on bank call loans was $2.9 million ($1.8 million in 2022 and $0.7 million in 2021).