Note 7 - Restructuring and Other Merger Related Cost - Restructuring and Related Costs (Details) $ in Thousands	6 Months Ended
Jun. 30, 2019 USD ($)
Beginning balance	$ 3,027
Accruals/(reversals)	1,839
Payments	(3,091)
Ending balance	1,775
Employee Severance [Member]
Beginning balance	760
Accruals/(reversals)	1,742
Payments	(1,685)
Ending balance	817
Facility Closing [Member]
Beginning balance	2,267
Accruals/(reversals)	97
Payments	(1,406)
Ending balance	$ 958

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
-SubTopic 10
-Section 50
-Paragraph 1
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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=118932676&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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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+ References

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