Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Cash Flows from Operating Activities:
Net income	$ 106,870	$ 83,762	$ 133,602
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation, amortization and accretion	32,307	25,915	28,391
Gain on equity method investment	(2,498)
Provision (benefit) for doubtful accounts	316	39	(570)
(Benefit) provision from deferred income taxes	(9,599)	1,058	(58)
Provision for stock-based compensation	7,586	3,077	3,460
Changes in assets and liabilities:
Accounts receivable	(67,369)	8,810	(61,413)
Inventories	(12,334)	(10,956)	(46,835)
Prepaids and other current assets	5,353	(7,659)	(853)
Other assets	(3,975)	1,672	(3,897)
Accounts payable	25,251	(19,079)	26,957
Accrued customer rebates and returns	49,849	9,016	(5,173)
Accrued compensation and other liabilities	20,209	(349)	4,501
Cash provided by operating activities	151,966	95,306	78,112
Cash Flows from Investing Activities:
Acquisitions, net of cash acquired	(14,808)		(28,040)
Property, plant and equipment additions	(15,450)	(29,560)	(26,106)
Purchase of investments			(5,000)
Cash used in investing activities	(30,258)	(29,560)	(59,146)
Cash Flows from Financing Activities:
Proceeds of revolving credit line	99,000
Payments of revolving credit line	(99,000)
Contingent consideration payments			(2,036)
Other stock related activity	3,007	365	249
Proceeds from exercise of stock options	1,184	123	201
Purchase and cancellation of common stock	(38,676)	(41,339)	(45,352)
Cash used in financing activities	(34,485)	(40,851)	(46,938)
Effect of exchange rate changes on Cash and Cash Equivalents			(261)
Net Increase (Decrease) in Cash and Cash Equivalents	87,223	24,895	(28,233)
Cash and Cash Equivalents, Beginning of Period	68,353	43,458	71,691
Cash and Cash Equivalents, End of Period	155,576	68,353	43,458
Supplemental Cash Flow Information
Cash paid for interest expense	753	338	250
Cash paid for income taxes	$ 28,341	$ 28,923	$ 30,453