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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2022
Income Taxes [Abstract]  
Provisions for Income Taxes
The provisions for income taxes consist of:
     
   
2022
   
2021
 
Federal current
 
$
11
   
$
710
 
State current
   
     
246
 
Federal deferred
   
370
     
311
 
State deferred
   
(331
)
   
(109
)
Federal investment tax credit, net of current utilization
   
(35
)
   
(38
)
Total income taxes
 
$
15
   
$
1,120
 
Reconciliation of Statutory Federal Tax Provision to Total Provision
A reconciliation of the statutory Federal tax provision to the total provision follows:
     
   
2022
   
2021
 
Statutory Federal tax provision
 
$
4,115
   
$
3,802
 
State income taxes, net of Federal benefit
   
(196
)
   
177
 
IRS TPR deduction
   
(3,675
)
   
(2,620
)
Tax-exempt interest
   
(41
)
   
(34
)
Amortization of investment tax credit
   
(35
)
   
(38
)
Cash value of life insurance
   
13
     
(17
)
Amortization of excess accumulated deferred income taxes
on accelerated depreciation
   
(160
)
   
(182
)
Change in enacted state tax rate
    3        
Other, net
   
(9
)
   
32
 
Total income taxes
 
$
15
   
$
1,120
 
Deferred Tax Assets and Liabilities
The tax effects of temporary differences between book and tax balances that give rise to significant portions of the deferred tax assets and deferred tax liabilities as of December 31, 2022 and 2021 are summarized in the following table:

 
2022
   
2021
 
Deferred tax assets:
           
Reserve for doubtful accounts
 
$
240
   
$
247
 
Compensated absences
   
172
     
176
 
Deferred compensation
   
1,052
     
1,376
 
Excess accumulated deferred income taxes on accelerated depreciation
   
3,385
     
3,942
 
Deferred taxes associated with the gross-up of revenues necessary to
return, in rates, the effect of temporary differences
   
1,700
     
2,348
 
Customers’ advances for construction and contributions in aid of
construction
   
1,260
     
1,545
 
Tax effect of pension regulatory liability
   
3,717
     
3,429
 
Tax loss carryover
    839        
Contribution carryover
    140        
Other costs deducted for book, not for tax
   
58
     
74
 
Total deferred tax assets
   
12,563
     
13,137
 
                 
Deferred tax liabilities:
               
Accelerated depreciation
   
28,772
     
30,953
 
Basis differences from IRS TPR
   
18,713
     
16,912
 
Investment tax credit
   
316
     
329
 
Deferred taxes associated with the gross-up of revenues necessary to
recover, in rates, the effect of temporary differences
   
7,439
     
9,553
 
Pensions
   
4,262
     
4,060
 
Unamortized debt issuance costs
   
393
     
469
 
Other costs deducted for tax, not for book
   
569
     
451
 
Total deferred tax liabilities
   
60,464
     
62,727
 
                 
Net deferred tax liability
 
$
47,901
   
$
49,590