Earnings Per Share Information (Tables)

12 Months Ended

Dec. 31, 2023

Earnings Per Share [Abstract]

Schedule of earnings per share calculation [Table Text Block]

Earnings per share was computed as follows:

	Year Ended December 31,
	2023		2022		2021
Income available to common shareholders:
Net income	$	72,140	$	61,290	$	65,699
Weighted-average shares:
Basic:
Outstanding	42,192,411		43,890,081		45,081,254
Partially-paid share subscriptions	1,259,250		557,594		—
Basic weighted-average shares	43,451,661		44,447,675		45,081,254
Diluted:
Basic from above	43,451,661		44,447,675		45,081,254
Incremental shares from assumed:
Exercise of stock subscription purchase rights	37,638		—		—
Exercise of stock options and awards	2,048,399		2,289,696		2,508,822
Diluted weighted-average shares	45,537,698		46,737,371		47,590,076
Share data:
Earnings per share--basic	$	1.66	$	1.38	$	1.46
Earnings per share--diluted	$	1.58	$	1.31	$	1.38