Note 19. Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Earnings Per Share [Abstract]
Net income	$ 1,528,229	$ 1,292,044	$ 830,777
Weighted-average common shares outstanding	107,235	107,015	106,795
Effect of restricted stock and performance units	302	510	577
Weighted-average shares used in computing diluted net income per share	107,537	107,525	107,372
Net income per share, basic	$ 14.25	$ 12.07	$ 7.78
Net income per share, diluted	$ 14.21	$ 12.02	$ 7.74
Anti-dilutive shares	2	0	0