Derivative Instruments and Hedging Activities (Schedule of Offsetting of Derivative Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gross Amounts of Recognized Liabilities	$ 9,049	$ 2,641
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts Of Liabilities Presented in the Balance Sheet	9,049	2,641
Gross Amounts Not Offset in the Balance Sheet, Financial Instruments Collateral	0	(16)
Gross Amounts Not Offset in the Balance Sheet, Cash Collateral	0	0
Net Amount	$ 9,049	$ 2,625