CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net income (loss)	$ (3,339)	$ 2,710
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation of property, plant, and equipment	1,237	1,113
Amortization of intangibles		7
Accretion/Amortization of investments available for sale	(120)	(983)
Deferred income taxes	61	57
Change in net pension liability	(93)	(13)
Stock-based compensation expense	6,339	6,065
Provision for sales returns and bad debts	128	(377)
Inventory provision	646	614
Changes in working capital:
Accounts receivable	29,837	(1,110)
Inventories	(4,002)	(3,920)
Prepayments, deposits, and other assets	(5,485)	(4,249)
Accounts payable	1,519	(3,168)
Other current liabilities	(5,048)	(1,840)
Net cash provided by (used in) operating activities	21,680	(5,094)
Cash flows from investing activities:
Acquisition of property and equipment	(5,202)	(2,901)
Purchase of investments available for sale		(27,445)
Proceeds from sale or maturity of investments available for sale	21,389	40,279
Net cash provided by investing activities	16,187	9,933
Cash flows from financing activities:
Repayment of finance lease obligations	(40)	(42)
Repurchase of employee common stock for taxes withheld	(1,229)	(1,849)
Proceeds from the exercise of stock options	5,324	529
Proceeds from vested restricted and performance stock units	1	1
Net cash provided by (used in) financing activities	4,056	(1,361)
Effect of exchange rate changes on cash and cash equivalents	(937)	10
Increase in cash and cash equivalents	40,986	3,488
Cash and cash equivalents, at beginning of the period	183,038	86,480
Cash and cash equivalents, at end of the period	$ 224,024	$ 89,968