Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 24, 2022	Sep. 25, 2021
Cash flows from operating activities:
Net income	$ 75,219	$ 146,436
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on business divestitures	0	(75,754)
Loss on extinguishment of debt	312	3,411
Net amortization (accretion) on investments	(411)	0
Gain from sale of property, plant and equipment	(191)	(54)
Depreciation and amortization	34,645	37,102
Share-based compensation expense	11,095	10,743
Non-cash inventory related charges	4,826	2,330
Deferred income taxes	1,979	3,801
Changes in accrued retiree medical benefits	(650)	(409)
Changes in other accrued liabilities	(822)	49
Changes in other assets	(4,542)	(941)
Amortization of cloud-based software implementation costs	1,434	1,157
Interest capitalized associated with cloud computing implementation	(122)	(133)
Amortization of debt discounts and issuance costs	247	542
Changes in assets and liabilities:
Customer advances	2,241	(3,402)
Accounts receivable	(5,783)	(65,538)
Inventories	(12,678)	(27,531)
Other current assets	(9,955)	(1,932)
Accounts payable	(14,464)	18,284
Deferred profit	(3,027)	2,751
Income taxes payable	8,764	16,188
Accrued compensation, warranty and other liabilities	(2,980)	3,107
Operating lease right-of-use assets	3,954	5,339
Current and long-term operating lease liabilities	(3,796)	(5,443)
Net cash provided by operating activities	85,295	70,103
Cash flows from investing activities:
Purchases of short-term investments	(154,446)	(168,918)
Sales and maturities of short-term investments	106,525	113,567
Purchases of property, plant and equipment	(10,700)	(8,924)
Cash received from sale of property, plant and equipment	296	106
Cash received from disposition of business, net of cash paid	0	120,886
Net cash provided by (used in) investing activities	(58,325)	56,717
Cash flows from financing activities:
Payments on current and long-term finance lease liabilities	(126)	(142)
Repurchases of common stock, net	(3,546)	(5,808)
Proceeds from revolving line of credit and construction loans	0	1,279
Proceeds received from issuance of common stock, net of fees	0	223,119
Repayments of long-term debt	(36,935)	(205,879)
Acquisition of treasury stock	(38,078)	0
Net cash provided by (used in) financing activities	(78,685)	12,569
Effect of exchange rate changes on cash and cash equivalents	(6,088)	38
Net increase (decrease) in cash and cash equivalents	(57,803)	139,427
Cash and cash equivalents at beginning of period	290,201	149,358
Cash and cash equivalents at end of period	232,398	288,785
Supplemental disclosure of cash flow information:
Cash paid for income taxes	16,189	6,067
Inventory capitalized as property, plant and equipment	1,500	1,511
Property, plant and equipment purchases included in accounts payable	640	634
Cash paid for interest	$ 2,261	$ 5,381