Note 11 - Fair Value Accounting - Financial Assets and Liabilities at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Pension assets	$ 1,780	$ 1,881
Totals	1,780	1,881
Derivative liabilities	7,486	24,128
Totals	7,486	24,128
Fair Value, Inputs, Level 1 [Member]
Pension assets	0	0
Totals	0	0
Derivative liabilities	0	0
Totals	0	0
Fair Value, Inputs, Level 2 [Member]
Pension assets	0	0
Totals	0	0
Derivative liabilities	0	0
Totals	0	0
Fair Value, Inputs, Level 3 [Member]
Pension assets	1,780	1,881
Totals	1,780	1,881
Derivative liabilities	7,486	24,128
Totals	$ 7,486	$ 24,128

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
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- Definition

Amount of plan asset for defined benefit plan with accumulated benefit obligation in excess of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)
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-Publisher FASB
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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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Fair value of financial and nonfinancial obligations.

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