Derivative Financial Instruments (Schedule of Derivative Liabilities at Fair Value) (Details) - Forward Contracts [Member] $ in Thousands	Sep. 30, 2018 USD ($)
Derivative Instruments in Hedges, at Fair Value, Net, Total	$ 2,137
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	2,137
Fair Value, Inputs, Level 3 [Member]
Derivative Instruments in Hedges, at Fair Value, Net, Total	$ 0