Derivatives (Details 1) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized in OCI	[1]	$ (152)	$ (69)	$ 234	$ 405
Net gain (loss) reclassified from accumulated OCI into income	[2]	41	(46)	(12)	(78)
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.