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Derivatives (Details 1) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Derivative Instruments, Gain (Loss) [Line Items]        
Net gain (loss) recognized in OCI [1] $ (11) $ (486) $ 223 $ (81)
Net gain (loss) reclassified from accumulated OCI into income [2] 28 (60) 16 (138)
Net gain recognized in income [3] $ 0 $ 0 $ 0 $ 0
[1] Net change in fair value of the effective portion classified into other comprehensive income ("OCI").
[2] Effective portion classified within direct operating cost.
[3] There were no effective portions for the period presented.