Note 8 - Fair Value Measurements - Assets and Liabilities Measured At Fair Value On a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Total fair value of assets measured on a recurring basis	$ 3,458	$ 1,823
Total fair value of liabilities measured on a recurring basis	1,315	566
Foreign Exchange Contract [Member]
Derivate asset	3,458	1,823
Derivate liability	557	22
Interest Rate Swap [Member]
Derivate liability	758	544
Fair Value, Inputs, Level 1 [Member]
Total fair value of assets measured on a recurring basis	0	0
Total fair value of liabilities measured on a recurring basis	0	0
Fair Value, Inputs, Level 1 [Member] \| Foreign Exchange Contract [Member]
Derivate asset	0	0
Derivate liability	0	0
Fair Value, Inputs, Level 1 [Member] \| Interest Rate Swap [Member]
Derivate liability	0	0
Fair Value, Inputs, Level 2 [Member]
Total fair value of assets measured on a recurring basis	3,458	1,823
Total fair value of liabilities measured on a recurring basis	1,315	566
Fair Value, Inputs, Level 2 [Member] \| Foreign Exchange Contract [Member]
Derivate asset	3,458	1,823
Derivate liability	557	22
Fair Value, Inputs, Level 2 [Member] \| Interest Rate Swap [Member]
Derivate liability	758	544
Fair Value, Inputs, Level 3 [Member]
Total fair value of assets measured on a recurring basis	0	0
Total fair value of liabilities measured on a recurring basis	0	0
Fair Value, Inputs, Level 3 [Member] \| Foreign Exchange Contract [Member]
Derivate asset	0	0
Derivate liability	0	0
Fair Value, Inputs, Level 3 [Member] \| Interest Rate Swap [Member]
Derivate liability	$ 0	$ 0

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

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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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
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-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611

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-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
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-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313

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Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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