Fair Value Measurements (Reconciliation of Beginning and Ending Level 3 Net Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
---|---|---|
Mar. 30, 2014
|
Mar. 31, 2013
|
|
Fair Value Disclosures [Abstract] | ||
Balance beginning of period | $ (4,926) | $ (3,017) |
Payments | 0 | 64 |
Change in fair value (included within selling, general and administrative expenses) | (55) | 226 |
Balance end of period | $ (4,981) | $ (2,727) |