Income taxes - Schedule of Provision (Benefit) for Income Taxes on Income Consists (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Current
Federal	$ 51,340	$ 154,621	$ 96,816
State and other	3,359	23,130	13,646
Total	54,699	177,751	110,462
Deferred
Federal	13,803	120	14,240
State and other	823	(3,927)	5,497
Total	14,626	(3,807)	19,737
Total
Federal	65,143	154,741	111,056
State and other	4,182	19,203	19,143
Total	$ 69,325	$ 173,944	$ 130,199