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Note 7 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Deferred compensation plan	$ 4,069	$ 5,150
Foreign currency forward contracts	259
Total financial assets	4,328
Foreign currency forward contracts		(138)
Fair Value, Inputs, Level 1 [Member]
Deferred compensation plan	3,409	4,268
Foreign currency forward contracts
Total financial assets	3,409
Foreign currency forward contracts
Fair Value, Inputs, Level 2 [Member]
Deferred compensation plan	660	882
Foreign currency forward contracts	259
Total financial assets	919
Foreign currency forward contracts		(138)
Fair Value, Inputs, Level 3 [Member]
Deferred compensation plan
Foreign currency forward contracts
Total financial assets
Foreign currency forward contracts

X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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X

- Definition

Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Fair value, after the effects of master netting arrangements, of a financial asset or other 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. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

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