CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2023	Dec. 30, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net Income (Loss)	$ 21,347	$ 39,665	$ 27,511
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant, and equipment	5,111	4,481	3,608
Amortization of intangibles	13	28	34
Impairment of intangibles	154
Accretion/amortization of investments available for sale	(2,501)	(1,198)
Deferred income taxes	3,264	(2,254)	(1,515)
Change in net pension liability	(956)	53	137
Loss on disposal of property and equipment	73	65	2
Stock-based compensation expense	23,516	20,371	14,605
Change in asset retirement obligation	(102)	47
Provision for sales returns and credit losses	663	913	318
Inventory provision	4,851	2,423	1,654
Changes in working capital:
Accounts receivable	(32,760)	(19,601)	(8,868)
Inventories	(14,361)	(7,943)	66
Prepayments, deposits, and other assets	(3,413)	(2,549)	(711)
Accounts payable	(701)	1,805	108
Other current liabilities	10,396	(591)	7,013
Net cash provided by operating activities	14,594	35,715	43,962
Cash flows from investing activities:
Acquisition of property and equipment	(18,188)	(18,108)	(13,645)
Purchase of investments available for sale	(52,313)	(155,748)
Proceeds from sale or maturity of investments available for sale	144,848	17,480
Net cash provided by (used in) investing activities	74,347	(156,376)	(13,645)
Cash flows from financing activities:
Repayment of finance lease obligations	(161)	(126)	(348)
Repayment of line of credit			(1,297)
Repurchase of employee common stock for taxes withheld	(2,097)
Proceeds from the exercise of stock options	9,672	8,422	19,437
Proceeds from vested restricted stock	1	1	1
Net cash provided by financing activities	7,415	8,297	17,793
Effect of exchange rate changes on cash and cash equivalents	202	(862)	(857)
Increase (decrease) in cash and cash equivalents	96,558	(113,226)	47,253
Cash and cash equivalents, at beginning of year	86,480	199,706	152,453
Cash and cash equivalents, at end of year	$ 183,038	$ 86,480	$ 199,706