Income taxes - Schedule of Provision (Benefit) for Income Taxes on Income Consists (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current
Federal	$ 154,621	$ 96,816	$ 161,438
State and other	23,130	13,646	23,456
Total	177,751	110,462	184,894
Deferred
Federal	120	14,240	13,435
State and other	(3,927)	5,497	4,041
Total	(3,807)	19,737	17,476
Total
Federal	154,741	111,056	174,873
State and other	19,203	19,143	27,497
Total	$ 173,944	$ 130,199	$ 202,370