Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Cash Flows from Operating Activities:
Net income	$ 83,762	$ 133,602	$ 106,599
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation, amortization and accretion	25,915	28,391	22,224
Provision for doubtful accounts	39	(570)	299
Provision (benefit) from deferred income tax	1,058	(58)	4,676
Provision for non-cash stock compensation	3,077	3,460	3,162
Changes in assets and liabilities:
Accounts receivable	8,810	(61,413)	(5,709)
Inventories	(10,956)	(46,835)	(25,147)
Prepaids and other current assets	(7,659)	(853)	(3,748)
Other assets	1,672	(3,897)	(4,908)
Accounts payable	(19,079)	26,957	3,718
Accrued customer rebates and returns	9,016	(5,173)
Accrued compensation and other liabilities	(349)	4,501	(6,925)
Cash provided by operating activities	95,306	78,112	94,241
Cash Flows from Investing Activities:
Acquisitions, net of cash acquired		(28,040)	(59,987)
Property, plant and equipment additions	(29,560)	(26,106)	(24,450)
Purchase of investments		(5,000)	(10,000)
Cash used in investing activities	(29,560)	(59,146)	(94,437)
Cash Flows from Financing Activities:
Contingent consideration payments		(2,036)
Other stock related activity	365	249	(1,173)
Proceeds from exercise of stock options	123	201	31
Purchase and cancellation of common stock	(41,339)	(45,352)	(76,129)
Cash used in financing activities	(40,851)	(46,938)	(77,271)
Effect of exchange rate changes on Cash and Cash Equivalents		(261)	37
Net Increase (Decrease) in Cash and Cash Equivalents	24,895	(28,233)	(77,430)
Cash and Cash Equivalents, Beginning of Period	43,458	71,691	149,121
Cash and Cash Equivalents, End of Period	68,353	43,458	71,691
Supplemental Cash Flow Information
Cash paid for interest expense	338	250	291
Cash paid for income taxes	$ 28,923	$ 30,453	$ 74,647