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Note 7 - Benefit Plans (Tables) | 6 Months Ended
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Jun. 30, 2018
Notes Tables |
Schedule of Net Benefit Costs [Table Text Block] |
|  | For the Three Months Ended |  |  | For the Six Months Ended |
(in thousands) |  | June 30 , 201 8 |  |  | July 1 , 201 7 |  |  | June 30 , 201 8 |  |  | July 1 , 201 7 |
Components of net periodic benefit cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 533 |  |  | $ | 408 |  |  | $ | 1,066 |  |  | $ | 816 |
Interest cost |  |  | 501 |  |  |  | 360 |  |  |  | 1,002 |  |  |  | 720 |
Expected return on plan assets |  |  | (540 | ) |  |  | (476 | ) |  |  | (1,080 | ) |  |  | (952 | )
Amortization of prior service (credit) |  |  | 74 |  |  |  | 84 |  |  |  | 148 |  |  |  | 168 |
Net periodic benefit cost |  | $ | 568 |  |  | $ | 376 |  |  | $ | 1,136 |  |  | $ | 752 |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + 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 (h) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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