Accrued Expenses And Other Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Jun. 27, 2014	Dec. 27, 2013
Accrued Expenses And Other Liabilities [Abstract]
Accrued compensation and benefits	$ 7,327	$ 5,163
Accrued bonuses	2,446	5,899
Accrued restructuring related expenses	1,419	134
Deferred revenue	9,794	8,345
Accrued sales, use, franchise and VAT tax	1,166	1,393
Acquisition-related contingent consideration	8,000
Other accrued expenses	4,892	4,712
Total accrued expenses and other liabilities	$ 35,044	$ 25,646