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Note 15 - Restructuring Charges - Lease Exit and Severance Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Balance	$ 4,381	$ 6,753
Charges (credits)	1,501	6,822
Cash payments	(2,547)	(9,194)
Balance	3,335	4,381
Lease Exit [Member]
Balance	1,791	2,005
Charges (credits)	71	44
Cash payments	(306)	(258)
Balance	1,556	1,791
Lease Exit [Member] | Corporate, Non-Segment [Member]
Balance	2,318	4,463
Charges (credits)	63	(33)
Cash payments	(602)	(2,112)
Balance	1,779	2,318
Severance [Member]
Balance	272	285
Charges (credits)	1,367	6,811
Cash payments	(1,639)	(6,824)
Balance	$ 0	$ 272

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-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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X

- Definition

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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-Section S99
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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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