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Note 8 - Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Defined Benefit Plans Disclosures [Table Text Block] |
(In thousands) |  | December 31, |
|  | 2018 |  |  | 2017 |
Changes in benefit obligation |  |  |  |  |  |  |  |
Benefit obligation at beginning of year |  | $ | 28,386 |  |  | $ | 25,258 |
Service cost |  |  | 108 |  |  |  | 65 |
Interest cost |  |  | 970 |  |  |  | 965 |
Actuarial (gain) loss |  |  | (1,597 | ) |  |  | 3,755 |
Benefits paid |  |  | (742 | ) |  |  | (1,657 | )
Benefit obligation at end of year |  |  | 27,125 |  |  |  | 28,386 |
Changes in plan assets |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year |  |  | 22,145 |  |  |  | 15,791 |
Actual return on assets |  |  | (1,526 | ) |  |  | 2,413 |
Employer contributions |  |  | 103 |  |  |  | 5,598 |
Benefits paid |  |  | (742 | ) |  |  | (1,657 | )
Fair value of plan assets at end of year |  |  | 19,980 |  |  |  | 22,145 |
Funded status at end of year |  | $ | (7,145 | ) |  | $ | (6,241 | )
Amounts recognized in consolidated balance sheet |  |  |  |  |  |  |  |
Other assets |  | $ | 1,663 |  |  | $ | 2,181 |
Other current liabilities |  |  | (103 | ) |  |  | (103 | )
Long-term pension liability |  |  | (8,705 | ) |  |  | (8,319 | )
|  |  | (7,145 | ) |  |  | (6,241 | )
Amounts recognized in accumulated other comprehensive income consist of: |  |  |  |  |  |  |  |
Net actuarial loss |  | $ | 11,417 |  |  | $ | 10,903 |
Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block] |
|  | December 31, |
|  | 2018 |  |  | 2017 |
Projected benefit obligation |  | $ | 27,125 |  |  | $ | 28,386 |
Fair value of plan assets |  |  | (19,980 | ) |  |  | (22,145 | )
|  | $ | 7,145 |  |  | $ | 6,241 |
Schedule of Net Benefit Costs [Table Text Block] |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Service cost - benefits earned during the period |  | $ | 108 |  |  | $ | 65 |  |  | $ | 57 |
Interest cost on projected benefit obligation |  |  | 970 |  |  |  | 965 |  |  |  | 988 |
Expected return on plan assets |  |  | (1,717 | ) |  |  | (1,218 | ) |  |  | (1,188 | )
Recognized actuarial loss |  |  | 1,132 |  |  |  | 1,042 |  |  |  | 1,027 |
Settlement loss |  |  | - |  |  |  | 435 |  |  |  | 445 |
Net periodic pension cost after settlements |  | $ | 493 |  |  | $ | 1,289 |  |  | $ | 1,329 |
Schedule of Assumptions Used [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Long Term Rate |  |  |  |  |  |  |  |  |
|  | Discount Rate |  |  | of Return |  |  | Salary Scale |
|  | Corp. |  |  | Plants |  |  | Corp. |  |  | Plants |  |  | Corp. |  |  | Plants |
2017 |  |  | 3.53 | % |  |  | 3.45 | % |  |  | 8.00 | % |  |  | 8.00 | % |  |  | N/A |  |  |  | N/A |
2018 |  |  | 4.14 | % |  |  | 4.06 | % |  |  | 8.00 | % |  |  | 8.00 | % |  |  | N/A |  |  |  | N/A |
|  |  |  |  |  |  |  |  |  | Long Term Rate |  |  |  |  |  |  |  |  |
|  | Discount Rate |  |  | of Return |  |  | Salary Scale |
|  | Corp. |  |  | Plants |  |  | Corp. |  |  | Plants |  |  | Corp. |  |  | Plants |
2016 |  |  | 4.19 | % |  |  | 4.09 | % |  |  | 8.00 | % |  |  | 8.00 | % |  |  | N/A |  |  |  | N/A |
2017 |  |  | 4.04 | % |  |  | 3.91 | % |  |  | 8.00 | % |  |  | 8.00 | % |  |  | N/A |  |  |  | N/A |
2018 |  |  | 3.53 | % |  |  | 3.45 | % |  |  | 8.00 | % |  |  | 8.00 | % |  |  | N/A |  |  |  | N/A |
Schedule of Allocation of Plan Assets [Table Text Block] |
|  | Percentage of Plan Assets at December 31, |  |  | Target Allocation |
Investment description |  | 201 8 |  |  | 201 7 |  |  | 201 9 |
Equity securities |  |  | 59 | % |  |  | 52 | % |  |  | 60 | %
Fixed income |  |  | 40 | % |  |  | 29 | % |  |  | 40 | %
Other |  |  | 1 | % |  |  | 19 | % |  |  | - | %
Total |  |  | 100 | % |  |  | 100 | % |  |  | 100 | %
Schedule of Expected Benefit Payments [Table Text Block] |
Year |  | Projected Benefit Payments |
|  | (in thousands) |
2019 |  | $ | 1,612 |
2020 |  | $ | 2,108 |
2021 |  | $ | 2,000 |
2022 |  | $ | 2,009 |
2023 |  | $ | 1,471 |
2024-2028 |  | $ | 8,590 |

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- Definition Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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