Note 2 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Inputs, Level 1 [Member] | Foreign Exchange Forward [Member]
Forward foreign exchange contracts
Forward foreign exchange contracts
Fair Value, Inputs, Level 1 [Member]
Total financial assets (liabilities)
Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Forward [Member]
Forward foreign exchange contracts	$ (610)
Forward foreign exchange contracts		$ (326)
Fair Value, Inputs, Level 2 [Member]
Total financial assets (liabilities)	$ (610)	$ 326
Fair Value, Inputs, Level 3 [Member] | Foreign Exchange Forward [Member]
Forward foreign exchange contracts
Forward foreign exchange contracts
Fair Value, Inputs, Level 3 [Member]
Total financial assets (liabilities)
Foreign Exchange Forward [Member]
Forward foreign exchange contracts	$ (610)
Forward foreign exchange contracts		$ (326)
Total financial assets (liabilities)	$ (610)	$ 326