Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) - USD ($) $ in Thousands |
Sep. 30, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | $ 45,263 | $ 45,356 |
| Accumulated Amortization | (28,688) | (25,723) |
| Net Carrying Amount | 16,575 | 19,633 |
| Customer Relationships [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | 33,095 | 33,188 |
| Accumulated Amortization | (18,499) | (16,099) |
| Net Carrying Amount | 14,596 | 17,089 |
| Technology Licenses [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | 11,300 | 11,300 |
| Accumulated Amortization | (9,982) | (9,434) |
| Net Carrying Amount | 1,318 | 1,866 |
| Other Intangible Assets [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | 868 | 868 |
| Accumulated Amortization | (207) | (190) |
| Net Carrying Amount | $ 661 | $ 678 |