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Accumulated other comprehensive income (loss)
12 Months Ended
Dec. 31, 2020
Equity [Abstract]  
Comprehensive income (loss) Accumulated Other Comprehensive Income (Loss)
The Company's accumulated other comprehensive income (loss) is comprised of losses on derivative instruments qualifying as hedges, postretirement liability adjustments and gain (loss) on available-for-sale investments.
The after-tax changes in the components of accumulated other comprehensive loss at December 31, 2020, 2019 and 2018, were as follows:
 Net
Unrealized
Loss on
Derivative
Instruments
Qualifying
as Hedges
Post-
retirement
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 (loss) before reclassifications— (6,151)134 (6,017)
Amounts reclassified from accumulated other comprehensive loss731 1,486 40 2,257 
Net current-period other comprehensive income (loss)731 (4,665)174 (3,760)
At December 31, 2019(1,430)(40,734)62 (42,102)
Other comprehensive loss before reclassifications— (8,395)(1)(8,396)
Amounts reclassified from accumulated other comprehensive loss446 1,922 52 2,420 
Net current-period other comprehensive income (loss)446 (6,473)51 (5,976)
At December 31, 2020$(984)$(47,207)$113 $(48,078)
The following amounts were reclassified out of accumulated other comprehensive loss into net income. The amounts presented in parenthesis indicate a decrease to net income on the Consolidated Statements of Income. The reclassifications for the years ended December 31 were as follows:
 20202019Location on Consolidated
Statements of Income
(In thousands)
Reclassification adjustment for loss on derivative instruments included in net income$(591)$(591)Interest expense
145 (140)Income taxes
(446)(731)
Amortization of postretirement liability losses included in net periodic benefit cost(2,552)(1,962)Other income
630 476 Income taxes
(1,922)(1,486)
Reclassification adjustment for loss on available-for-sale investments included in net income(66)(50)
Other income
14 10 
Income taxes
(52)(40)
Total reclassifications$(2,420)$(2,257)