STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net income	$ 222,850	$ 231,232	$ 221,742
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	960	(478)	5,823
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax	96	0	0
Other comprehensive income (loss)	1,056	(478)	5,823
Comprehensive income	$ 223,906	$ 230,754	$ 227,565