Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2023	Jun. 25, 2022
Cash flows from operating activities:
Net income	$ 26,269	$ 50,337
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on extinguishment of debt	369	232
Net accretion on investments	(609)	0
Gain from sale of property, plant and equipment	(17)	(58)
Depreciation and amortization	24,458	23,199
Share-based compensation expense	8,346	7,355
Non-cash inventory related charges	3,215	2,154
Deferred income taxes	(1,489)	1,056
Changes in accrued retiree medical benefits	(281)	(270)
Changes in other accrued liabilities	(227)	(555)
Changes in other assets	(161)	(2,243)
Amortization of cloud-based software implementation costs	1,400	956
Interest capitalized associated with cloud computing implementation	0	(59)
Amortization of debt discounts and issuance costs	81	180
Operating lease right-of-use assets	3,536	2,751
Changes in assets and liabilities, excluding effects from acquisitions:
Customer advances	3,840	9,515
Accounts receivable	38,140	(24,913)
Inventories	(4,704)	(6,024)
Other current assets	1,416	(7,013)
Accounts payable	(8,781)	(4,194)
Deferred profit	(3,976)	(2,608)
Income taxes payable	(2,741)	6,950
Accrued compensation, warranty and other liabilities	(15,097)	(8,408)
Current and long-term operating lease liabilities	(3,357)	(2,541)
Net cash provided by operating activities	69,630	45,799
Cash flows from investing activities, excluding effects from acquisitions:
Purchases of short-term investments	(43,732)	(72,433)
Sales and maturities of short-term investments	90,769	74,150
Purchases of property, plant and equipment	(8,140)	(5,724)
Cash received from sale of property, plant and equipment	193	84
Payment for purchase of MCT, net of cash received	(26,331)	0
Net cash provided by (used in) investing activities	12,759	(3,923)
Cash flows from financing activities:
Payments on current and long-term finance lease liabilities	(39)	(86)
Repurchases of common stock, net	(7,335)	(3,241)
Repayments of long-term debt	(36,458)	(25,198)
Acquisition of treasury stock	(6,180)	(20,378)
Net cash used in financing activities	(50,012)	(48,903)
Effect of exchange rate changes on cash and cash equivalents	572	(2,588)
Net increase (decrease) in cash and cash equivalents	32,949	(9,615)
Cash and cash equivalents at beginning of period	242,341	290,201
Cash and cash equivalents at end of period	275,290	280,586
Supplemental disclosure of cash flow information:
Cash paid for income taxes	9,201	10,760
Inventory capitalized as property, plant and equipment	663	1,116
Property, plant and equipment purchases included in accounts payable	180	1,153
Cash paid for interest	$ 2,453	$ 1,458