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Summary Of Significant Accounting Policies (Schedule Of Allowance For Doubtful Accounts) (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
|
| Summary Of Significant Accounting Policies [Abstract] | |||
| Beginning Balance | $ (725) | $ (510) | $ (479) |
| Additions | (220) | (167) | (290) |
| Reductions, (recoveries) and write-offs | 42 | (48) | 259 |
| Ending Balance | $ (903) | $ (725) | $ (510) |