|
Intangible Assets Gross Carrying Amount and Accumulated Amortization (Details) (USD $)
In Thousands, unless otherwise specified |
Sep. 30, 2014
|
Dec. 31, 2013
|
Sep. 30, 2013
|
Dec. 31, 2012
|
|---|---|---|---|---|
| Intangible Assets [Line Items] | ||||
| Gross Assets | $ 769,992 | $ 804,281 | $ 798,040 | $ 802,540 |
| Accumulated Amortization | (614,560) | (608,441) | ||
| Net | 155,432 | 195,840 | ||
|
Core-developed technology [Member]
|
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| Intangible Assets [Line Items] | ||||
| Gross Assets | 414,289 | 428,890 | ||
| Accumulated Amortization | (361,336) | (356,017) | ||
| Net | 52,953 | 72,873 | ||
|
Customer contracts and relationships [Member]
|
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| Intangible Assets [Line Items] | ||||
| Gross Assets | 274,073 | 291,185 | ||
| Accumulated Amortization | (176,036) | (173,952) | ||
| Net | 98,037 | 117,233 | ||
|
Trademarks and trade names [Member]
|
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| Intangible Assets [Line Items] | ||||
| Gross Assets | 70,046 | 73,117 | ||
| Accumulated Amortization | (66,146) | (67,449) | ||
| Net | 3,900 | 5,668 | ||
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Other [Member]
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| Intangible Assets [Line Items] | ||||
| Gross Assets | 11,584 | 11,089 | ||
| Accumulated Amortization | (11,042) | (11,023) | ||
| Net | $ 542 | $ 66 |