Earnings Per Share Information (Tables)

12 Months Ended

Dec. 31, 2025

Earnings Per Share [Abstract]

Schedule of earnings per share calculation [Table Text Block]

Earnings per share was computed as follows:

	Year Ended December 31,
	2025		2024		2023
Income available to common shareholders:
Net income	$	33,325	$	64,796	$	72,140
Weighted-average shares:
Basic:
Outstanding	40,162,613		41,126,770		42,192,411
Partially-paid share subscriptions	1,057,550		1,165,550		1,259,250
Basic weighted-average shares	41,220,163		42,292,320		43,451,661
Diluted:
Basic from above	41,220,163		42,292,320		43,451,661
Incremental shares from assumed:
Exercise of stock subscription purchase rights	105,411		85,948		37,638
Exercise of stock options and awards	1,378,216		1,755,379		2,048,399
Diluted weighted-average shares	42,703,790		44,133,647		45,537,698
Share data:
Earnings per share--basic	$	.81	$	1.53	$	1.66
Earnings per share--diluted	$	.78	$	1.47	$	1.58