Note 6 - Impairment Losses and Restructuring Exit Cost - Restructuring and Related Costs (Details) $ in Thousands	9 Months Ended
Sep. 30, 2020 USD ($)
Beginning balance	$ 1,840
Accruals/(reversals)	1,837
Payments	(3,566)
Ending balance	111
Employee Severance [Member]
Beginning balance	1,326
Accruals/(reversals)	1,497
Payments	(2,823)
Ending balance	0
Facility Closing [Member]
Beginning balance	514
Accruals/(reversals)	340
Payments	(743)
Ending balance	$ 111

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3367-108585

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Amount 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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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