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Note 18 - Accumulated Other Comprehensive Loss (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | December 31, |
|  | 2019 |  |  | 2018 |
Foreign currency translation adjustment |  | $ | (20,032 | ) |  | $ | (22,635 | )
Unrealized holding gain on available-for-sale securities, net of taxes of $0 and $0 as of December 31, 2019 and 2018 |  |  | 12 |  |  |  | 12 |
Unfunded SERP liability, net of taxes of ($639) and ($680) as of December 31, 2019 and 2018 |  |  | (4,045 | ) |  |  | (2,215 | )
Accumulated other comprehensive loss |  | $ | (24,065 | ) |  | $ | (24,838 | )
Schedule of Changes in Accumulated Other Comprehensive Income (Loss) by Component [Table Text Block] |
|  |  |  |  |  | Unrealized Holding |  |  |  |  |  |  |  |  |  |
|  | Foreign Currency |  |  | Gains on |  |  |  |  |  |  |  |  |  |
|  | Translation |  |  | Available-for- |  |  | Unfunded |  |  |  |  |  |
|  | Adjustment |  |  | Sale Securities |  |  | SERP Liability |  |  |  | Total |
Balance at January 1, 2018 |  | $ | (16,537) |  |  | $ | 145 |  |  | $ | (3,233) |  |  |  | $ | (19,625) |
Other comprehensive income (loss) before reclassifications |  |  | (6,098) |  |  |  | 37 |  |  |  | 679 |  |  |  |  | (5,382) |
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | - |  |  |  | (170) |  |  |  | 339 |  | (a) |  |  | 169 |
Net current period other comprehensive income (loss) |  |  | (6,098) |  |  |  | (133) |  |  |  | 1,018 |  |  |  |  | (5,213) |
Balance at December 31, 2018 |  |  | (22,635) |  |  |  | 12 |  |  |  | (2,215) |  |  |  |  | (24,838) |
Other comprehensive income (loss) before reclassifications |  |  | 2,603 |  |  |  | - |  |  |  | (1,492) |  |  |  |  | 1,111 |
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | - |  |  |  | - |  |  |  | 125 |  | (a) |  |  | 125 |
Effect of adoption of ASU 2018-02 (Topic 220) |  |  | - |  |  |  | - |  |  |  | (463) |  |  |  |  | (463) |
Net current period other comprehensive income (loss) |  |  | 2,603 |  |  |  | - |  |  |  | (1,830) |  |  |  |  | 773 |
Balance at December 31, 2019 |  | $ | (20,032) |  |  | $ | 12 |  |  | $ | (4,045) |  |  |  | $ | (24,065) |

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