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Fair Value Measurements (Liabilities Measured at Fair Value Using Level 3 Inputs) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
May 31, 2014
|
May 31, 2013
|
May 31, 2014
|
May 31, 2013
|
|
| Fair Value Disclosures [Abstract] | ||||
| Balance, beginning of period | $ 393 | $ 0 | $ 388 | $ 0 |
| Incurrence of contingent purchase price liability | 1,450 | 379 | 1,450 | 379 |
| Payments of contingent consideration | (210) | 0 | (210) | 0 |
| Changes in fair value included in operating expenses | 16 | 0 | 21 | 0 |
| Balance, end of period | $ 1,649 | $ 379 | $ 1,649 | $ 379 |