Accounts Receivable Factoring Agreements Schedule (Details) - USD ($) $ in Thousands |
Jun. 28, 2014 |
Dec. 28, 2013 |
|---|---|---|
| Receivables [Abstract] | ||
| Trade receivables sold to financial institutions | $ 88,546 | $ 71,542 |
| Net amounts advanced from financial institutions | 77,649 | 63,667 |
| Amounts due from financial institutions | $ 10,897 | $ 7,875 |