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Note 5 - Derivative Instruments and Hedging Activities - Movement in AOCI Balance (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
[2]
Jun. 30, 2018
Jun. 30, 2017
[2]
AOCI balance, Gains and losses on cash flow hedges $ 23    
Other comprehensive income (loss) before reclassifications, Gains and losses on cash flow hedges (361)   (338)  
Amount reclassified from accumulated other comprehensive income, Gains and losses on cash flow hedges 17   17  
Other comprehensive income (loss), Gains and losses on cash flow hedges (344)   (321)  
AOCI balance, Gains and losses on cash flow hedges (321)   (321)  
AOCI balance, Tax impact (6)    
Other comprehensive income (loss) before reclassifications, Tax impact 88   82  
Amount reclassified from accumulated other comprehensive income, Tax impact (4)   (4)  
Other comprehensive income (loss), Tax impact 84   78  
AOCI balance, Tax impact 78   78  
AOCI balance 17   [1]  
Other comprehensive income (loss) before reclassifications (273) $ 143 (256) $ 329
Amount reclassified from accumulated other comprehensive income 13 $ (17) 13 $ (98)
Other comprehensive income (loss) (260)   (243)  
AOCI balance $ (243)   $ (243)  
[1] The Company has initially applied ASC 2014-09 (Topic 606) using the modified retrospective method. Under this method, the comparative information is not restated.
[2] The Company has initially applied ASC 2014-09 (Topic 606) using the modified retrospective method. Under this method, the comparative information is not restated.