STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net income	$ 19,268	$ 25,189	$ 145,828	$ 160,499
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax	0	0	0	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	0	(1)	(1)	(1)
OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, Tax	(68)	0	(67)	0
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax	255	0	254	0
Other comprehensive income	255	(1)	253	(1)
Comprehensive income	$ 19,523	$ 25,188	$ 146,081	$ 160,498