XML 45 R34.htm IDEA: XBRL DOCUMENT v3.7.0.1
Note 3 - Derivative Instruments and Hedging Activities - Fair Value of Derivatives (Details) - Fair Value, Inputs, Level 2 [Member] - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Commodity Contract [Member]    
Fair Value of Derivatives $ 432 $ 623
Foreign Exchange Contract [Member]    
Fair Value of Derivatives 267 (150)
Interest Rate Swap [Member]    
Fair Value of Derivatives $ (493) $ (1,739)