XML 83 R63.htm IDEA: XBRL DOCUMENT v3.6.0.2
Financial Instruments and Derivative Financial Instruments Foreign Currency Forward Contracts (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Derivative [Line Items]      
Gain (Loss) on Foreign Currency Fair Value Hedge Derivatives $ (765) $ 2,673 $ 2,670