Bank call loans (Tables)

12 Months Ended

Dec. 31, 2021

Bank Call Loans [Abstract]

Summary of Bank Call Loans

Details of the bank call loans are as follows:

(Expressed in thousands, except percentages)
	2021			2020
Year-end balance	$	69,500		$	82,000
Weighted interest rate (at end of year)	0.96		%	1.09		%
Maximum balance (at any month-end)	117,800			203,100
Average amount outstanding (during the year)	76,412			82,760
Average interest rate (during the year)	0.95		%	0.93		%