Reconciliation of Total Segment Profit to Operating Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Segment Profit	$ 63,777	$ 39,845	$ 98,007	$ 73,464
Charge for fair value write-up of acquired inventory sold	24,293	0	24,293	0
Amortization	9,390	2,359	11,726	4,646
Contingent consideration fair value adjustment	(1,282)	0	(1,282)	0
Unallocated General And Administrative Expenses	54,744	11,099	68,099	22,184
Operating (loss) income	(23,368)	26,387	(4,829)	46,634
Interest expense	12,537	40	12,566	44
Interest income	(192)	(54)	(415)	(179)
Other expense (income), net	1,351	(896)	1,529	(2,123)
(Loss) income before income taxes	$ (37,064)	$ 27,297	$ (18,509)	$ 48,892