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Note 8 - Components of Accumulated Other Comprehensive Loss (Tables) | 6 Months Ended
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Jun. 30, 2017
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Net Unrealized Gain (Loss) on Securities |  |  | Adjustments Related to Pension Benefits |  |  | Accumulated Other Comprehensive Loss |
Balance at December 31, 201 5 |  | $ | (2,667 | ) |  | $ | (5,270 | ) |  | $ | (7,937 | )
Unrealized holding gain on available for sale securities, net of tax of $2,170 |  |  | 4,032 |  |  |  | --- |  |  |  | 4,032 |
Reclassification adjustment, net of tax of ($1 8) |  |  | (34 | ) |  |  | --- |  |  |  | (34 | )
Balance at June 30, 2016 |  | $ | 1,331 |  |  | $ | (5,270 | ) |  | $ | (3,939 | )
Balance at December 31, 201 6 |  | $ | (3,588 | ) |  | $ | (5,071 | ) |  | $ | (8,659 | )
Unrealized holding gain on available for sale securities net of tax of $1,454 |  |  | 2,701 |  |  |  | --- |  |  |  | 2,701 |
Balance at June 30 , 2017 |  | $ | (887 | ) |  | $ | (5,071 | ) |  | $ | (5,958 | )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] |
|  | 3 Months Ended |  |  | 6 Months Ended |
|  | June 30, 2017 |  |  | June 30, 2016 |  |  | June 30, 2017 |  |  | June 30, 2016 |
Reclassifications out of unrealized gains and losses on available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Realized securities gain, net |  | $ | --- |  |  | $ | (46 | ) |  | $ | --- |  |  | $ | (52 | )
Income taxes |  |  | --- |  |  |  | (16 | ) |  |  | --- |  |  |  | (18 | )
Realized gain on available-for-sale securities, net of tax, reclassified out of accumulated other comprehensive loss |  | $ | --- |  |  | $ | (30 | ) |  | $ | --- |  |  | $ | (34 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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