Note 9 - Fair Value Measurements - Assets and Liabilities Measured At Fair Value On a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Total fair value of assets measured on a recurring basis	$ 1,812	$ 1,388
Total fair value of liabilities measured on a recurring basis	765	307
Foreign Exchange Contract [Member]
Derivate asset	1,812	1,388
Derivate liability	100	276
Interest Rate Swap [Member]
Derivate liability	665	31
Fair Value, Inputs, Level 1 [Member]
Total fair value of assets measured on a recurring basis
Total fair value of liabilities measured on a recurring basis
Fair Value, Inputs, Level 1 [Member] \| Foreign Exchange Contract [Member]
Derivate asset
Derivate liability
Fair Value, Inputs, Level 1 [Member] \| Interest Rate Swap [Member]
Derivate liability
Fair Value, Inputs, Level 2 [Member]
Total fair value of assets measured on a recurring basis	1,812	1,388
Total fair value of liabilities measured on a recurring basis	765	307
Fair Value, Inputs, Level 2 [Member] \| Foreign Exchange Contract [Member]
Derivate asset	1,812	1,388
Derivate liability	100	276
Fair Value, Inputs, Level 2 [Member] \| Interest Rate Swap [Member]
Derivate liability	665	31
Fair Value, Inputs, Level 3 [Member]
Total fair value of assets measured on a recurring basis
Total fair value of liabilities measured on a recurring basis
Fair Value, Inputs, Level 3 [Member] \| Foreign Exchange Contract [Member]
Derivate asset
Derivate liability
Fair Value, Inputs, Level 3 [Member] \| Interest Rate Swap [Member]
Derivate liability

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
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-SubTopic 10
-Section 50
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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
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-Topic 210
-SubTopic 20
-Section 55
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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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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=118260190&loc=d3e13433-108611

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