| Schedule of changes to accumulated other comprehensive loss by component | 
  
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Unrealized  | 
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Net Loss  | 
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Retiree  | 
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on Interest  | 
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Health   | 
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Rate  | 
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Benefit  | 
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Swap  | 
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Obligation  | 
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Total  | 
 
Balance at December 31, 2020  | 
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$  | 
 (7,608)  | 
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$  | 
 2,113  | 
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$  | 
 (5,495)  | 
 
Other comprehensive gain before reclassifications  | 
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 943  | 
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 589  | 
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 1,532  | 
 
Amounts reclassified from accumulated other comprehensive loss: (1)  | 
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 3,141  | 
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 (231)  | 
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 2,910  | 
 
Balance at December 31, 2021  | 
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$  | 
 (3,524)  | 
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$  | 
 2,471  | 
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$  | 
 (1,053)  | 
 
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(1) Amounts reclassified from accumulated other comprehensive loss:  | 
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Amortization of Other Postretirement Benefit items:  | 
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Actuarial gains (a)  | 
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$  | 
 (312)  | 
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Tax expense  | 
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 81  | 
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Reclassification net of tax  | 
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$  | 
 (231)  | 
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Unrealized gains on interest rate swaps reclassified to interest expense  | 
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$  | 
 4,244  | 
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Tax expense  | 
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 (1,103)  | 
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Reclassification net of tax  | 
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$  | 
 3,141  | 
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(a)     – These components are included in the computation of benefit plan costs in Note 13.  |  
 
 
 
Changes to accumulated other comprehensive loss by component for the year ended December 31, 2020 is as follows: 
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Unrealized  | 
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Net Loss  | 
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Retiree   | 
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on Interest  | 
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Health  | 
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Rate  | 
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Benefit  | 
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Swap  | 
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Obligation  | 
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Total  | 
 
Balance at December 31, 2019  | 
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$  | 
 (5,023)  | 
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$  | 
 2,209  | 
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$  | 
 (2,814)  | 
 
Other comprehensive gain (loss) before reclassifications  | 
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 (5,047)  | 
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 133  | 
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 (4,914)  | 
 
Amounts reclassified from accumulated other comprehensive loss: (1)  | 
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 2,462  | 
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 (229)  | 
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 2,233  | 
 
Balance at December 31, 2020  | 
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$  | 
 (7,608)  | 
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$  | 
 2,113  | 
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$  | 
 (5,495)  | 
 
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(1) Amounts reclassified from accumulated other comprehensive loss:  | 
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Amortization of Other Postretirement Benefit items:  | 
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Actuarial gain (a)  | 
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$  | 
 (310)  | 
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Tax expense  | 
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 81  | 
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Reclassification net of tax  | 
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$  | 
 (229)  | 
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Unrealized gains on interest rate swaps reclassified to interest expense  | 
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$  | 
 3,327  | 
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Tax expense  | 
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 (865)  | 
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Reclassification net of tax  | 
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$  | 
 2,462  | 
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(a)     – These components are included in the computation of benefit plan costs in Note 13.  |  
 
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