v3.26.1
Income Tax (Tables)
 6 Months Ended
Jun. 30, 2026
Income Tax Disclosure [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation
Three Months Ended June 30,
NW HoldingsNW Natural
In thousands2026202520262025
Income tax at statutory rate (federal)$254 $(722)$1,294 $1,378 
State income tax101 (210)649 306 
Increase (decrease):
Differences required to be flowed-through by regulatory commissions6 8 7 9 
Other, net249 (16)281 (55)
Total expense (benefit) for income taxes$610 $(940)$2,231 $1,638 
Effective income tax rate50.5 %27.3 %36.2 %25.0 %
Six Months Ended June 30,
NW HoldingsNW Natural
In thousands2026202520262025
Income tax at statutory rate (federal)$27,560 $24,991 $27,734 $27,986 
State income tax8,931 9,770 9,896 10,508 
Increase (decrease):
Differences required to be flowed-through by regulatory commissions(1,948)(1,660)(1,947)(1,659)
Other, net(1,394)486 (1,297)467 
Total provision for income taxes$33,149 $33,587 $34,386 $37,302 
Effective income tax rate25.3 %28.2 %26.0 %28.0 %