Derivative Instruments and Hedging Activities (Schedule of Offsetting of Derivative Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gross Amounts of Recognized Liabilities	$ 2,778	$ 1,808
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts Of Liabilities Presented in the Balance Sheet	2,778	1,808
Gross Amounts Not Offset in the Balance Sheet, Financial Instruments Collateral	(35)	0
Gross Amounts Not Offset in the Balance Sheet, Cash Collateral	0	0
Net Amount	$ 2,743	$ 1,808