Common Shares, Redeemable Common Shares and Preferred Shares (Tables)

12 Months Ended

Dec. 31, 2023

Equity [Abstract]

Schedule of stock by class [Table Text Block]

Common and Redeemable Shares Outstanding--The table below reconciles the activity of the common and redeemable shares outstanding:

	Common Shares Net of Treasury Shares	Redeemable Shares	Total
Shares outstanding, December 31, 2021	35,110,432	9,391,790	44,502,222
Shares purchased	(3,020,253)	(1,145,329)	(4,165,582)
Shares sold	829,526	941,549	1,771,075
Stock subscription offering, employee cash purchases	152,800	—	152,800
Options exercised	456,969	—	456,969
Shares outstanding, December 31, 2022	33,529,474	9,188,010	42,717,484
Shares purchased	(2,560,912)	(1,412,062)	(3,972,974)
Shares sold	1,291,227	723,138	2,014,365
Stock subscription offering, employee cash purchases	13,662	—	13,662
Options exercised	574,857	—	574,857
Shares outstanding, December 31, 2023	32,848,308	8,499,086	41,347,394