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Accumulated Other Comprehensive Income
 12 Months Ended
Dec. 31, 2019
Equity [Abstract]  
Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income
Changes in accumulated other comprehensive income by component, net of tax, were as follows:
(In thousands)
Postretirement
Benefits
Balance at December 31, 2016
$
985

Other comprehensive income before reclassifications
2,815

Amounts reclassified from accumulated other comprehensive loss
(1,723
)
Net current-period other comprehensive income
1,092

Balance at December 31, 2017
$
2,077

Other comprehensive income before reclassifications
2,461

Amounts reclassified from accumulated other comprehensive loss
(101
)
Net current-period other comprehensive income
2,360

Balance at December 31, 2018
$
4,437

Other comprehensive income before reclassifications
(2,530
)
Amounts reclassified from accumulated other comprehensive loss
(547
)
Net current-period other comprehensive income
(3,077
)
Balance at December 31, 2019
$
1,360


Amounts reclassified from accumulated other comprehensive income into the Consolidated Statement of Operations were as follows:
 
Year Ended December 31,
 
Affected Line Item in the
Consolidated Statement of Operations
(In thousands)
2019
 
2018
 
2017
 
Postretirement benefits
 

 
 

 
 

 
 
Amortization of prior service cost
$
709

 
$
709

 
$
2,733

 
General and administrative expense
Total before tax
709

 
709

 
2,733

 
Income before income taxes
Income tax expense
(162
)
 
(162
)
 
(1,010
)
 
Income tax expense
Cumulative effect of adoption of ASU 2018-02 reclassified to retained earnings
—

 
(446
)
 
—

 
Retained earnings
Total reclassifications for the period
$
547

 
$
101

 
$
1,723

 
Net income