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Note 4 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2019 | Dec. 31, 2018
Long-term Debt, Fair Value | $ 116,800 | $ 116,800 | $ 117,900
Long-term Debt, Total | 112,300 | 112,300 | 114,200
Goodwill, Impairment Loss |  | 8,891 |
Goodwill, Ending Balance | 10,778 | 10,778 | 19,817
North America Reporting Unit [Member] |  |  |
Goodwill, Impairment Loss | 8,900 |  |
Goodwill, Impairment Loss, Net of Tax | 8,500 |  |
Europe Reporting Unit [Member] |  |  |
Goodwill, Ending Balance | 10,800 | 10,800 |
Fair Value, Nonrecurring [Member] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Investments Held in Rabbi Trust [Member] |  |  |
Investments, Fair Value Disclosure, Total | $ 1,200 | $ 1,200 | $ 1,400

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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