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Derivative Financial Instruments and Hedging Activities - Schedule of Other Income (Expense), Net Related to Derivative Financial Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]        
Losses on economic hedges $ (738) $ (6) $ (1,613) $ (374)
Write-off of losses in AOCL for a discontinued hedge relationship (523) (408) (6,916) (1,580)
Loss on derivatives $ (1,261) $ (414) $ (8,529) $ (1,954)