|
Short-term Borrowings And Long-Term Debt (Summary Of Aggregate Short-term Borrowings) (Details) (USD $)
In Thousands, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
| Short-term Debt [Line Items] |
|
|
|
| Short-term borrowings, Amount outstanding at end of year |
$ 42,184 |
$ 40,363 |
|
| Repurchase Agreements [Member] |
|
|
|
| Short-term Debt [Line Items] |
|
|
|
| Short-term borrowings, Amount outstanding at end of year |
42,184 |
24,597 |
19,356 |
| Short-term borrowings, Weighted average interest rate at end of year |
0.46% |
0.54% |
0.56% |
| Short-term borrowings, Maximum amount outstanding at any month-end |
51,218 |
25,702 |
26,166 |
| Short-term borrowings, Daily average amount outstanding |
32,688 |
22,174 |
20,843 |
| Short-term borrowings, Approximate weighted average interest rate for the year |
0.51% |
0.56% |
0.58% |
| Other Short Term Borrowings [Member] |
|
|
|
| Short-term Debt [Line Items] |
|
|
|
| Short-term borrowings, Amount outstanding at end of year |
0 |
15,766 |
0 |
| Short-term borrowings, Weighted average interest rate at end of year |
0.00% |
0.25% |
0.00% |
| Short-term borrowings, Maximum amount outstanding at any month-end |
11,825 |
15,766 |
0 |
| Short-term borrowings, Daily average amount outstanding |
$ 1,056 |
$ 542 |
$ 0 |
| Short-term borrowings, Approximate weighted average interest rate for the year |
0.21% |
0.20% |
0.00% |