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Note 5 - Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Comprehensive Income (Loss) [Table Text Block] |
(In Thousands) |  | Before-Tax |  |  | Income Tax |  |  | Net-of-Tax |
|  | Amount |  |  | Effect |  |  | Amount |
2019 |  |  |  |  |  |  |  |  |  |  |  |
Unrealized gains on available-for-sale debt securities: |  |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains on available-for-sale securities |  | $ | 9,920 |  |  | $ | (2,084 | ) |  | $ | 7,836 |
Reclassification adjustment for gains realized in income |  |  | (23 | ) |  |  | 5 |  |  |  | (18 | )
Other comprehensive income on available-for-sale debt securities |  |  | 9,897 |  |  |  | (2,079 | ) |  |  | 7,818 |
Unfunded pension and postretirement obligations: |  |  |  |  |  |  |  |  |  |  |  |
Changes from plan amendments and actuarial gains and losses included in other comprehensive income |  |  | 87 |  |  |  | (19 | ) |  |  | 68 |
Amortization of prior service cost and net actuarial loss included in net periodic benefit cost |  |  | (32 | ) |  |  | 7 |  |  |  | (25 | )
Other comprehensive income on unfunded retirement obligations |  |  | 55 |  |  |  | (12 | ) |  |  | 43 |
Total other comprehensive income |  | $ | 9,952 |  |  | $ | (2,091 | ) |  | $ | 7,861 |
(In Thousands) |  | Before-Tax |  |  | Income Tax |  |  | Net-of-Tax |
|  | Amount |  |  | Effect |  |  | Amount |
2018 |  |  |  |  |  |  |  |  |  |  |  |
Unrealized losses on available-for-sale debt securities: |  |  |  |  |  |  |  |  |  |  |  |
Unrealized holding losses on available-for-sale securities |  | $ | (3,392 | ) |  | $ | 712 |  |  | $ | (2,680 | )
Reclassification adjustment for losses realized in income |  |  | 288 |  |  |  | (60 | ) |  |  | 228 |
Other comprehensive loss on available-for-sale debt securities |  |  | (3,104 | ) |  |  | 652 |  |  |  | (2,452 | )
Unfunded pension and postretirement obligations: |  |  |  |  |  |  |  |  |  |  |  |
Changes from plan amendments and actuarial gains and losses included in other comprehensive income |  |  | 101 |  |  |  | (21 | ) |  |  | 80 |
Amortization of prior service cost and net actuarial loss included in net periodic benefit cost |  |  | (17 | ) |  |  | 3 |  |  |  | (14 | )
Other comprehensive income on unfunded retirement obligations |  |  | 84 |  |  |  | (18 | ) |  |  | 66 |
Total other comprehensive loss |  | $ | (3,020 | ) |  | $ | 634 |  |  | $ | (2,386 | )
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
In (Thousands) |  | Unrealized |  |  |  |  |  |  | Accumulated |
|  | Gains |  |  | Unfunded |  |  | Other |
|  | (Losses) |  |  | Retirement |  |  | Comprehensive |
|  | on Securities |  |  | Obligations |  |  | Income (Loss) |
2019 |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  | $ | (4,307 | ) |  | $ | 137 |  |  | $ | (4,170 | )
Other comprehensive income during year ended December 31, 2019 |  |  | 7,818 |  |  |  | 43 |  |  |  | 7,861 |
Balance, end of period |  | $ | 3,511 |  |  | $ | 180 |  |  | $ | 3,691 |
2018 |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  | $ | (1,566 | ) |  | $ | 59 |  |  | $ | (1,507 | )
Impact of change in enacted income tax rate |  |  | (337 | ) |  |  | 12 |  |  |  | (325 | )
Impact of change in the method of premium amortization of callable debt securities |  |  | 26 |  |  |  | 0 |  |  |  | 26 |
Impact of change in the method of accounting for marketable equity security |  |  | 22 |  |  |  | 0 |  |  |  | 22 |
Other comprehensive (loss) income during year ended December 31, 2018 |  |  | (2,452 | ) |  |  | 66 |  |  |  | (2,386 | )
Balance, end of period |  | $ | (4,307 | ) |  | $ | 137 |  |  | $ | (4,170 | )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] |
For the Year Ended December 31, 2019 |  |  |  |  |  |
(In Thousands) |  |  |  |  |
|  | Reclassified from |  |  |
|  | Accumulated Other |  |  |
Details about Accumulated Other |  | Comprehensive |  |  | Affected Line Item in the Consolidated
Comprehensive Income (Loss) Components |  | Income (Loss) |  |  | Statements of Income
Unrealized gains and losses on available-for-sale debt securities |  | $ | (23 | ) |  | Realized gains on available-for-sale debt securities, net
|  |  | 5 |  |  | Income tax provision
|  |  | (18 | ) |  | Net of tax
Amortization of defined benefit pension and postretirement items: |  |  |  |  |  |
Prior service cost |  |  | (31 | ) |  | Other noninterest expense
Actuarial gain |  |  | (1 | ) |  | Other noninterest expense
|  |  | (32 | ) |  | Total before tax
|  |  | 7 |  |  | Income tax provision
|  |  | (25 | ) |  | Net of tax
Total reclassifications for the period |  | $ | (43 | ) |  |
For the Year Ended December 31, 2018 |  |  |  |  |  |
(In Thousands) |  |  |  |  |  |
|  | Reclassified from |  |  |
|  | Accumulated Other |  |  |
Details about Accumulated Other |  | Comprehensive |  |  | Affected Line Item in the Consolidated
Comprehensive Income (Loss) Components |  | Income (Loss) |  |  | Statements of Income
Unrealized gains and losses on available-for-sale debt securities |  | $ | 288 |  |  | Realized losses on available-for-sale debt securities, net
|  |  | (60 | ) |  | Income tax provision
|  |  | 228 |  |  | Net of tax
Amortization of defined benefit pension and postretirement items: |  |  |  |  |  |
Prior service cost |  |  | (30 | ) |  | Other noninterest expense
Actuarial loss |  |  | 13 |  |  | Other noninterest expense
|  |  | (17 | ) |  | Total before tax
|  |  | 3 |  |  | Income tax provision
|  |  | (14 | ) |  | Net of tax
Total reclassifications for the period |  | $ | 214 |  |  |

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