v3.25.4

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 157,074	$ 201,678	$ 182,872
Other comprehensive income (loss):
Reclassification adjustment for loss on derivative instruments included in net income, net of tax of $0, $0 and $28 in 2025, 2024 and 2023, respectively	0	0	90
Pension and postretirement liability adjustment:
Pension and postretirement liability gains (losses) arising during the period, net of tax of $(417), $567 and $252 in 2025, 2024 and 2023, respectively	(1,209)	1,709	751
Amortization of pension and postretirement liability losses included in net periodic benefit cost, net of tax of $85, $103 and $64 in 2025, 2024 and 2023, respectively	249	308	192
Pension and postretirement liability adjustment	(960)	2,017	943
Net current-period other comprehensive income (loss)	(960)	2,017	1,033
Comprehensive income attributable to common stockholders	$ 156,114	$ 203,695	$ 183,905

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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