Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Cash Flows from Operating Activities:
Net income	$ 23,407	$ 30,647
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation, amortization and accretion	7,265	6,378
Provision for non-cash stock compensation	915	851
Operating lease right-of-use assets amortization	1,507
Changes in assets and liabilities:
Accounts receivable	12,611	(8,880)
Inventories	(18,184)	6,309
Prepaids and other current assets	(3,685)	(1,550)
Other assets	418	35
Accounts payable	(11,091)	(16,519)
Accrued compensation and other liabilities	3,268	2,480
Cash provided by operating activities	16,431	19,751
Cash Flows from Investing Activities:
Property, plant and equipment additions	(8,838)	(6,276)
Cash used in investing activities	(8,838)	(6,276)
Cash Flows from Financing Activities:
Other stock related activity	(622)	(563)
Purchase and cancellation of common stock	(9,635)	(9,208)
Cash used in financing activities	(10,257)	(9,771)
Effect of exchange rate changes on Cash and Cash Equivalents		(51)
Net (Decrease) Increase in Cash and Cash Equivalents	(2,664)	3,653
Cash and Cash Equivalents, Beginning of Period	43,458	71,691
Cash and Cash Equivalents, End of Period	40,794	75,344
Supplemental Cash Flow Information
Cash paid for interest expense	61	66
Cash paid for income taxes	$ 74	$ 295