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Financial Instruments (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Fair Value, Inputs, Level 1 [Member]    
Assets    
Derivatives $ 0  
Liabilities    
Derivatives   $ 0
Fair Value, Inputs, Level 2 [Member]    
Assets    
Derivatives 42  
Liabilities    
Derivatives   165
Fair Value, Inputs, Level 3 [Member]    
Assets    
Derivatives $ 0  
Liabilities    
Derivatives   $ 0