Note 13 - Fair Value Measurements and Derivatives (Details Textual) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Dec. 31, 2020
Interest Rate Swap [Member]
Derivative, Notional Amount	$ 0
Deferred Gain (Loss) on Discontinuation of Interest Rate Fair Value Hedge	3,000
Interest Rate Contract [Member] \| Cash Flow Hedging [Member]
Derivative, Notional Amount	425,000
Foreign Exchange Forward [Member]
Derivative, Notional Amount	$ 422,000	$ 386,000
Maximum Remaining Maturity of Foreign Currency Derivatives (Month)	15 months
Currency Swap [Member]
Derivative, Notional Amount	$ 1,101,000	$ 1,118,000

Amount as of the balance sheet date of the unamortized adjustment to the carrying value of an interest-bearing hedged item made under an effective interest rate fair value hedge that is amortized upon discontinuation of the interest rate fair value hedge.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 35
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=121561968&loc=d3e75592-113984

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

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- Definition

Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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