Derivative Financial Instruments (Schedule of Derivative Liabilities at Fair Value) (Details) - Forward Contracts [Member] $ in Thousands	Sep. 30, 2017 USD ($)
Derivative Instruments in Hedges, at Fair Value, Net, Total	$ (29)
Fair Value, Inputs, Level 1 [Member]
Derivative Instruments in Hedges, at Fair Value, Net, Total	0
Fair Value, Inputs, Level 2 [Member]
Derivative Instruments in Hedges, at Fair Value, Net, Total	(29)
Fair Value, Inputs, Level 3 [Member]
Derivative Instruments in Hedges, at Fair Value, Net, Total	$ 0