Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013
Cash Flows from Operating Activities:
Net income	$ 71,331	$ 61,301
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation, amortization and accretion	9,001	7,417
Provision for doubtful accounts	219	101
(Benefit) provision for deferred income taxes	(434)	236
Provision for non-cash stock compensation	1,510	769
Changes in assets and liabilities:
Accounts receivable	(8,662)	(38,623)
Inventories	(15,734)	(3,722)
Prepaids and other current assets	(1,878)	(799)
Accounts payable	(9,168)	2,493
Accrued compensation and other liabilities	1,221	7,668
Cash provided by operating activities	47,406	36,841
Cash Flows from Investing Activities:
Property, plant and equipment additions	(22,992)	(12,949)
Acquisition		(1,897)
Cash used in investing activities	(22,992)	(14,846)
Cash Flows from Financing Activities:
Proceeds from exercise of stock options	463	503
Other stock related activity	81	793
Purchase and cancellation of common stock	(41,341)	(2,664)
Cash used in financing activities	(40,797)	(1,368)
Net (Decrease) Increase in Cash and Cash Equivalents	(16,383)	20,627
Cash and Cash Equivalents, Beginning of Period	60,593	27,708
Cash and Cash Equivalents, End of Period	44,210	48,335
Supplemental Cash Flow Information
Cash paid for interest expense	176	150
Cash paid for income taxes	$ 38,192	$ 31,325