Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 26, 2016	Mar. 28, 2015
Cash Flows from Operating Activities:
Net income	$ 24,671	$ 21,339
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation, amortization and accretion	4,499	3,618
Provision for doubtful accounts	996	10
Benefit for deferred income taxes	(442)	(927)
Provision for non-cash stock compensation	440	340
Changes in assets and liabilities:
Accounts receivable	(4,468)	4,883
Inventories	6,139	(9,515)
Prepaids and other current assets	(405)	633
Other assets	(1,487)	(1,422)
Accounts payable	(11,930)	939
Accrued compensation and other liabilities	5,901	3,906
Cash provided by operating activities	23,914	23,804
Cash Flows from Investing Activities:
Property, plant and equipment additions	(5,598)	(5,749)
Cash used in investing activities	(5,598)	(5,749)
Cash Flows from Financing Activities:
Other stock related activity	(11)	118
Purchase and cancellation of common stock	(9,986)	(1,230)
Cash used in financing activities	(9,997)	(1,112)
Net Increase in Cash and Cash Equivalents	8,319	16,943
Cash and Cash Equivalents, Beginning of Period	78,659	47,656
Cash and Cash Equivalents, End of Period	86,978	64,599
Supplemental Cash Flow Information
Cash paid for interest expense	70	73
Cash paid for income taxes	$ 2,568	$ 2,746