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Accumulated other comprehensive income (loss)
9 Months Ended
Sep. 30, 2020
Equity [Abstract]  
Comprehensive income (loss) Accumulated other comprehensive income (loss)
The after-tax changes in the components of accumulated other comprehensive loss were as follows:
Net Unrealized
Gain (Loss) on
Derivative
Instruments
Qualifying as
Hedges
Postretirement
Liability
Adjustment
Net Unrealized
Gain (Loss) on
Available-for-sale
Investments
Total
Accumulated
Other
Comprehensive
Loss
 (In thousands)
At December 31, 2019$(1,430)$(40,734)$62 $(42,102)
Other comprehensive income before reclassifications
— — 135 135 
Amounts reclassified (to) from accumulated other comprehensive loss111 462 (1)572 
Net current-period other comprehensive income
111 462 134 707 
At March 31, 2020$(1,319)$(40,272)$196 $(41,395)
Other comprehensive loss before reclassifications
— — (13)(13)
Amounts reclassified from accumulated other comprehensive loss
112 480 599 
Net current-period other comprehensive income (loss)
112 480 (6)586 
At June 30, 2020
$(1,207)$(39,792)$190 $(40,809)
Other comprehensive loss before reclassifications— — (50)(50)
Amounts reclassified from accumulated other comprehensive loss111 471 28 610 
Net current-period other comprehensive income (loss) 111 471 (22)560 
At September 30, 2020$(1,096)$(39,321)$168 $(40,249)
Net Unrealized
Gain (Loss) on
Derivative
Instruments
Qualifying as
Hedges
Postretirement
Liability
Adjustment
Net Unrealized
Gain (Loss) on
Available-for-sale
Investments
Total
Accumulated
Other
Comprehensive
Loss
 (In thousands)
At December 31, 2018$(2,161)$(36,069)$(112)$(38,342)
Other comprehensive income before reclassifications
— — 39 39 
Amounts reclassified from accumulated other comprehensive loss
397 310 28 735 
Net current-period other comprehensive income
397 310 67 774 
At March 31, 2019$(1,764)$(35,759)$(45)$(37,568)
Other comprehensive income before reclassifications
— — 79 79 
Amounts reclassified from accumulated other comprehensive loss
111 276 12 399 
Net current-period other comprehensive income
111 276 91 478 
At June 30, 2019
$(1,653)$(35,483)$46 $(37,090)
Other comprehensive income before reclassifications— — 12 12 
Amounts reclassified (to) from accumulated other comprehensive loss112 292 (4)400 
Net current-period other comprehensive income112 292 412 
At September 30, 2019$(1,541)$(35,191)$54 $(36,678)
The following amounts were reclassified between accumulated other comprehensive loss and net income. The amounts presented in parenthesis indicate a decrease to net income on the Consolidated Statements of Income. The reclassifications were as follows:
Three Months EndedNine Months EndedLocation on Consolidated
Statements of
Income
September 30,September 30,
2020201920202019
(In thousands)
Reclassification adjustment for loss on derivative instruments included in net income
$(148)$(148)$(443)$(443)Interest expense
37 36 109 (177)Income taxes
(111)(112)(334)(620)
Amortization of postretirement liability losses included in net periodic benefit cost
(623)(387)(1,869)(1,162)Other income
152 95 456 284 Income taxes
(471)(292)(1,413)(878)
Reclassification adjustment on available-for-sale investments included in net income
(35)(43)(46)Other income
(1)10 Income taxes
(28)(34)(36)
Total reclassifications$(610)$(400)$(1,781)$(1,534)