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Note 7 - Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Loss Reported in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Balance | $ 293,132 | $ 325,495 | $ 302,888
Reclassification of stranded income tax effects in accumulated other comprehensive income |  |  |
Balance | 307,878 | 293,132 | 325,495
Accumulated Foreign Currency Adjustment Attributable to Parent [Member] |  |  |
Balance | (8,243) | (5,321) | (8,842)
Reclassification adjustments |  |  |
Current period benefit (charge) | 88 | (2,922) | 3,521
Income tax charge |  |  |
Reclassification of stranded income tax effects in accumulated other comprehensive income |  |  |
Reclassification adjustments |  |  |
Income tax benefit |  |  |
Balance | (8,155) | (8,243) | (5,321)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |
Balance | (15,180) | (7,188) | (11,623)
Reclassification adjustments | 1,753 | 4,016 | 5,124
Current period benefit (charge) | (8,521) | (9,644) | 1,479
Income tax charge | 1,566 | (294) | (2,168)
Reclassification of stranded income tax effects in accumulated other comprehensive income |  | (2,070) |
Reclassification adjustments | 1,753 | 4,016 | 5,124
Income tax benefit | 1,566 | (294) | (2,168)
Balance | (20,382) | (15,180) | (7,188)
AOCI Attributable to Parent [Member] |  |  |
Balance | (23,423) | (12,509) | (20,465)
Reclassification adjustments | 1,753 | 4,016 | 5,124
Current period benefit (charge) | (8,433) | (12,566) | 5,000
Income tax charge | 1,566 | (294) | (2,168)
Reclassification of stranded income tax effects in accumulated other comprehensive income |  | (2,070) |
Reclassification adjustments | 1,753 | 4,016 | 5,124
Income tax benefit | 1,566 | (294) | (2,168)
Balance | $ (28,537) | $ (23,423) | $ (12,509)

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- Definition Amount of current period charge (benefit) before tax of other comprehensive income (loss) attributable to parent entity. + References No definition available. + Details
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- Definition Amount of increase (decrease) in accumulated other comprehensive income (AOCI) for reclassification to retained earnings of tax effect from remeasurement of deferred tax pursuant to Tax Cuts and Jobs Act. + References No definition available. + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(31)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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