Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets (Details) - USD ($) $ in Thousands |
Jun. 27, 2015 |
Dec. 27, 2014 |
|---|---|---|
| Other intangible assets | ||
| Gross | $ 409,678 | $ 413,313 |
| Accumulated Amortization | (240,740) | (237,876) |
| Net | 168,938 | 175,437 |
| Indefinite-lived intangibles assets | 3,438 | 3,438 |
| Total other intangibles assets, net | 172,376 | 178,875 |
| Backlog | ||
| Other intangible assets | ||
| Gross | 8,903 | 8,728 |
| Accumulated Amortization | (8,538) | (6,636) |
| Net | 365 | 2,092 |
| Client relationships | ||
| Other intangible assets | ||
| Gross | 375,465 | 379,339 |
| Accumulated Amortization | (219,111) | (217,938) |
| Net | 156,354 | 161,401 |
| Trademarks and trade names | ||
| Other intangible assets | ||
| Gross | 6,599 | 6,603 |
| Accumulated Amortization | (5,584) | (5,314) |
| Net | 1,015 | 1,289 |
| Standard operating procedures | ||
| Other intangible assets | ||
| Gross | 2,303 | 2,309 |
| Accumulated Amortization | (1,844) | (1,642) |
| Net | 459 | 667 |
| Other identifiable intangible assets | ||
| Other intangible assets | ||
| Gross | 16,408 | 16,334 |
| Accumulated Amortization | (5,663) | (6,346) |
| Net | $ 10,745 | $ 9,988 |