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Note 17 - Restructuring (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Jun. 30, 2018
Restructuring Costs | $ 3,004 | $ 394 |
Minimum [Member] | Scenario, Forecast [Member] |  |  |
Restructuring Costs |  |  | $ 5,000
Maximum [Member] | Scenario, Forecast [Member] |  |  |
Restructuring Costs |  |  | $ 6,000
Severance and Non-cash Lease Impairment Costs [Member] |  |  |
Restructuring Costs | $ 3,000 | $ 400 |

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- Definition Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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