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Other Comprehensive Income (Loss) (Tables)
 6 Months Ended
Jun. 30, 2021
Stockholders' Equity Note [Abstract]  
Schedule of activity in accumulated other comprehensive income (loss) and amounts reclassified out of each component of accumulated other comprehensive (loss) income
The following tables present reclassifications out of accumulated other comprehensive income (loss) for the three and six month periods ended June 30, 2021 and 2020.
Three Months Ended June 30, 2021
(In thousands)Before-Tax
Amount		Tax (Expense)
Benefit		Net of Tax
Available-for-sale debt securities:
Change in net unrealized gain/loss during the period$11,244 $(2,755)$8,489 
Reclassification adjustment for net realized gain on sale of available-for-sale debt securities included in net income0 0 0 
Net unrealized gains/losses11,244 (2,755)8,489 
Employee benefit plans:
Amortization of net retirement plan actuarial gain712 (175)537 
Amortization of net retirement plan prior service cost55 (13)42 
Employee benefit plans767 (188)579 
Other comprehensive (loss) income$12,011 $(2,943)$9,068 
 
Three Months Ended June 30, 2020
(In thousands)Before-Tax
Amount		Tax (Expense)
Benefit		Net of Tax
Available-for-sale debt securities:
Change in net unrealized gain/loss during the period$(339)$82 $(257)
Reclassification adjustment for net realized gain on sale of available-for-sale debt securities included in net income0 0 0 
Net unrealized gains/losses(339)82 (257)
Employee benefit plans:
Amortization of net retirement plan actuarial gain581 (142)439 
Amortization of net retirement plan prior service cost54 (13)41 
Employee benefit plans635 (155)480 
Other comprehensive income$296 $(73)$223 
Six Months Ended June 30, 2021
(In thousands)Before-Tax
Amount		Tax (Expense)
Benefit		Net of Tax
Available-for-sale debt securities:
Change in net unrealized gain/loss during the period$(22,197)$5,440 $(16,757)
Reclassification adjustment for net realized gain on sale of available-for-sale debt securities included in net income(330)81 (249)
Net unrealized gains/losses(22,527)5,521 (17,006)
Employee benefit plans:
Amortization of net retirement plan actuarial loss1,476 (362)1,114 
Amortization of net retirement plan prior service cost111 (27)84 
Employee benefit plans1,587 (389)1,198 
Other comprehensive income$(20,940)$5,132 $(15,808)

Six Months Ended June 30, 2020
(In thousands)Before-Tax
Amount		Tax (Expense)
Benefit		Net of Tax
Available-for-sale debt securities:
Change in net unrealized gain/loss during the period$28,963 $(7,097)$21,866 
Reclassification adjustment for net realized gain on sale of available-for-sale debt securities included in net income(429)105 (324)
Net unrealized gains/losses28,534 (6,992)21,542 
Employee benefit plans:
Amortization of net retirement plan actuarial loss1,183 (290)893 
Amortization of net retirement plan prior service cost107 (26)81 
Employee benefit plans1,290 (316)974 
Other comprehensive income$29,824 $(7,308)$22,516 
The following table presents the activity in our accumulated other comprehensive income (loss) for the periods indicated:
 
(In thousands)Available-for-
Sale Debt Securities		Employee
Benefit Plans		Accumulated
Other
Comprehensive
(Loss) Income
Balance at March 31, 2021$(4,886)$(52,064)$(56,950)
Other comprehensive (loss) income before reclassifications8,489 0 8,489 
Amounts reclassified from accumulated other comprehensive (loss) income0 579 579 
Net current-period other comprehensive (loss) income8,489 579 9,068 
Balance at June 30, 2021$3,603 $(51,485)$(47,882)
Balance at January 1, 2021$20,609 $(52,683)$(32,074)
Other comprehensive (loss) income before reclassifications(16,757)0 (16,757)
Amounts reclassified from accumulated other comprehensive (loss) income(249)1,198 949 
Net current-period other comprehensive income(17,006)1,198 (15,808)
Balance at June 30, 2021$3,603 $(51,485)$(47,882)

(In thousands)Available-for-
Sale Debit Securities		Employee
Benefit Plans		Accumulated
Other
Comprehensive
(Loss) Income
Balance at March 31, 2020$25,838 $(47,109)$(21,271)
Other comprehensive income (loss) before reclassifications(257)0 (257)
Amounts reclassified from accumulated other comprehensive (loss) income0 480 480 
Net current-period other comprehensive income(257)480 223 
Balance at June 30, 2020$25,581 $(46,629)$(21,048)
Balance at January 1, 2020$4,039 $(47,603)$(43,564)
Other comprehensive income (loss) before reclassifications21,866 0 21,866 
Amounts reclassified from accumulated other comprehensive (loss) income(324)974 650 
Net current-period other comprehensive income21,542 974 22,516 
Balance at June 30, 2020$25,581 $(46,629)$(21,048)
Schedule of reclassifications out of accumulated other comprehensive income (loss)
The following tables present the amounts reclassified out of each component of accumulated other comprehensive (loss) income for the three and six months ended June 30, 2021 and 2020.

Three Months Ended June 30, 2021
Details about Accumulated other Comprehensive Income (Loss) Components (In thousands)
Amount
Reclassified from
Accumulated
Other
Comprehensive
(Loss) Income1
Affected Line Item in the
Statement Where Net Income is
Presented
Available-for-sale debt securities:
Unrealized gains and losses on available-for-sale debt securities$0 Net gain on securities transactions
0 Tax expense
0 Net of tax
Employee benefit plans:
Amortization of the following 2
Net retirement plan actuarial loss(711)Other operating expense
Net retirement plan prior service cost(56)Other operating expense
(767)Total before tax
188 Tax benefit
$(579)Net of tax
 
Three Months Ended June 30, 2020
Details about Accumulated other Comprehensive Income (Loss) Components (In thousands)
Amount
Reclassified from
Accumulated
Other
Comprehensive
(Loss) Income1
Affected Line Item in the
Statement Where Net Income is
Presented
Available-for-sale debt securities:
Unrealized gains and losses on available-for-sale debt securities$0 Net gain on securities transactions
0 Tax expense
0 Net of tax
Employee benefit plans:
Amortization of the following2
Net retirement plan actuarial loss(581)Other operating expense
Net retirement plan prior service cost(54)Other operating expense
(635)Total before tax
155 Tax benefit
$(480)Net of tax
Six Months Ended June 30, 2021
Details about Accumulated other Comprehensive Income (Loss) Components (In thousands)
Amount
Reclassified from
Accumulated
Other
Comprehensive
(Loss) Income1
Affected Line Item in the
Statement Where Net Income is
Presented
Available-for-sale debt securities:
Unrealized gains and losses on available-for-sale debt securities$330 Net gain on securities transactions
(81)Tax expense
249 Net of tax
Employee benefit plans:
Amortization of the following2
Net retirement plan actuarial loss(1,475)Other operating expense
Net retirement plan prior service cost(111)Other operating expense
(1,586)Total before tax
388 Tax benefit
$(1,198)Net of tax

Six Months Ended June 30, 2020
Details about Accumulated other Comprehensive Income (Loss) Components (In thousands)
Amount
Reclassified from
Accumulated
Other
Comprehensive
(Loss) Income1
Affected Line Item in the
Statement Where Net Income is
Presented
Available-for-sale debt securities:
Unrealized gains and losses on available-for-sale debt securities$429 Net gain on securities transactions
(105)Tax expense
324 Net of tax
Employee benefit plans:
Amortization of the following2
Net retirement plan actuarial loss(1,183)Other operating expense
Net retirement plan prior service cost(107)Other operating expense
(1,290)Total before tax
316 Tax benefit
$(974)Net of tax
1 Amounts in parentheses indicated debits in income statement.
2 The accumulated other comprehensive (loss) income components are included in the computation of net periodic benefit cost (See Note 8 - “Employee Benefit Plan”).