|
Summary Of Significant Accounting Policies (Revenue Recognition) (Details)
|
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
|
Sales Revenue, Services, Net [Member]
|
|||
| Concentration Risk [Line Items] | |||
| Service revenue, as a percentage of total revenue | 10.00% | 10.00% | 10.00% |
|
Minimum [Member]
|
|||
| Concentration Risk [Line Items] | |||
| Service contract terms | 12 months | ||
|
Maximum [Member]
|
|||
| Concentration Risk [Line Items] | |||
| Service contract terms | 36 months | ||