v3.24.2.u1
Income Tax
 6 Months Ended
Jun. 30, 2024
Income Tax Disclosure [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation
The effective income tax rate varied from the federal statutory rate due to the following:

Three Months Ended June 30,
NW HoldingsNW Natural
In thousands2024202320242023
Income tax at statutory rate (federal)$(756)$312 $(80)$442 
State income tax(345)211 (167)217 
Increase (decrease):
Differences required to be flowed-through by regulatory commissions107 (161)108 (160)
Other, net182 (119)183 (177)
Total (benefit) expense for income taxes$(812)$243 $44 $322 
Effective income tax rate22.6 %16.3 %(11.6)%15.3 %

Six Months Ended June 30,
NW HoldingsNW Natural
In thousands2024202320242023
Income tax at statutory rate (federal)$17,758 $20,644 $19,499 $21,854 
State income tax7,232 8,360 7,682 8,623 
Increase (decrease): 
Differences required to be flowed-through by regulatory commissions(1,472)(3,070)(1,472)(3,069)
Other, net9 (544)8 (664)
Total provision for income taxes$23,527 $25,390 $25,717 $26,744 
Effective income tax rate27.8 %25.8 %27.7 %25.7 %