Earnings Per Share Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Earnings Per Share [Abstract]
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
Weighted-average shares, diluted
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
Earnings per share--basic	$ 0.81	$ 1.53	$ 1.66
Earnings per share--diluted	$ 0.78	$ 1.47	$ 1.58