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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2022
Income Taxes [Abstract]  
Schedule of income tax expense reconciliation
   (Thousands of Dollars)
   Years Ended December 31,
   2022  2021  2020
Income Tax at Statutory Rate  $9,590   $6,521   $7,204 
Tax Effect of:               
Utility Plant Related   (1,106)   (1,290)   (1,356)
Tangible Property Repairs   (6,767)   (12,281)   (11,298)
State Income Taxes – Net   1,296    1,499    1,364 
Other   227    63    (33)
Total Income Tax Expense (Benefit)  $3,240   $(5,488)  $(4,119)

 

Schedule of income tax expense
   (Thousands of Dollars)
   Years Ended December 31,
   2022  2021  2020
Current:         
Federal  $425   $(8,247)  $(4,281)
State   1,381    1,467    2,598 
Deferred:               
Federal   1,242    933    (1,490)
State   260    431    (871)
Investment Tax Credits   (68)   (72)   (75)
Total Income Tax (Benefit) Expense  $3,240   $(5,488)  $(4,119)

 

Schedule of net deferred tax liability
   (Thousands of Dollars)
   December 31,
   2022  2021
Utility Plant Related  $72,996   $65,107 
Customer Advances   (3,568)   (3,595)
Employee Benefits   7,380    7,091 
Investment Tax Credits   304    373 
Other   671    524 
Total Accumulated Deferred Income Taxes  $77,783   $69,500