Derivatives And Hedging (Offsetting Of Derivative Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Offsetting Of Derivative Assets And Liabilities [Line Items]
Gross Amounts Recognized, Assets	$ 13,620	$ 9,926
Gross Amounts Offset in Balance Sheet, Assets	0	0
Net Amounts Presented in Balance Sheet, Assets	13,620	9,926
Gross Amount Not Offset in Balance Sheet, Financial Instruments, Assets	0	0
Gross Amount Not Offset in Balance Sheet, Cash Collateral Received, Assets	0	0
Net Amount, Assets	13,620	9,926
Gross Amounts Recognized, Liabilities	537	768
Gross Amounts Offset in Balance Sheet, Liabilities	0	0
Net Amounts Presented in Balance Sheet, Liabilities	537	768
Gross Amount Not Offset in Balance Sheet, Financial Instruments, Liabilities	0	0
Gross Amount Not Offset in Balance Sheet, Cash Collateral Received, Liabilities	0	0
Net Amount, Liabilities	$ 537	$ 768