Note 7 - Derivatives (Details Textual) - Foreign Exchange Contract [Member] - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Derivative, Notional Amount	$ 12,544	$ 9,322
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	$ (169)

Fair value as of the balance sheet date of all foreign currency derivatives not designated as hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant