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Note 5 - Derivative Instruments and Hedging Activities - Fair Value of Derivative Instruments in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
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Foreign currency forward contracts | $ (364) |
Derivative Instruments [Member] |  |
Foreign currency forward contracts | (364) |
Derivative Instruments [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] |  |
Foreign currency forward contracts | (321) |
Derivative Instruments [Member] | Not Designated as Hedging Instrument [Member] |  |
Foreign currency forward contracts | $ (43) |

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- Definition Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into. + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
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- Details
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- Details
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Data Type: | na
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Period Type: |

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- Details
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