|
Intangible Assets and Goodwill (Schedule Of Intangible Assets) (Details) (USD $)
In Thousands, unless otherwise specified |
May 31, 2014
|
Nov. 30, 2013
|
|---|---|---|
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | $ 71,812 | $ 64,336 |
| Accumulated Amortization | (55,722) | (54,386) |
| Net Book Value | 16,090 | 9,950 |
|
Purchased technology [Member]
|
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| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | 52,079 | 44,793 |
| Accumulated Amortization | (37,733) | (36,712) |
| Net Book Value | 14,346 | 8,081 |
|
Customer-related and other [Member]
|
||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | 19,733 | 19,543 |
| Accumulated Amortization | (17,989) | (17,674) |
| Net Book Value | $ 1,744 | $ 1,869 |