CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 29, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net income	$ 153	$ 22,051
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation	9,178	9,225
Stock-based compensation	20,724	19,621
Amortization of convertible debt discount	673	897
Amortization of warrant	870	1,298
Foreign currency remeasurement	(814)	(3,312)
Deferred income taxes, net	2,026	1,798
Provision for expected credit losses and returns	1,790	1,835
Provision for excess and obsolete inventories	6,514	4,521
Gain on sale of investment in equity securities	0	(4,370)
Other adjustments	146	419
Changes in operating assets and liabilities:
Accounts receivable	(4,348)	(22,115)
Inventories	14,532	(34,952)
Other assets	6,164	(10,371)
Accounts payable	(20,606)	1,305
Deferred revenues	(9,208)	(955)
Other liabilities	(27,002)	(770)
Net cash provided by (used in) operating activities	792	(13,875)
Cash flows from investing activities:
Purchases of short-term investments	(6,305)	0
Proceeds from sales of investments	0	7,962
Purchases of property and equipment	(5,749)	(7,389)
Net cash provided by (used in) investing activities	(12,054)	573
Cash flows from financing activities:
Repurchase of common stock	0	(5,133)
Proceeds from other debts	3,829	3,499
Repayment of other debts	(4,721)	(4,480)
Proceeds from common stock issued to employees	6,552	6,129
Taxes paid related to net share settlement of equity awards	(8,643)	(5,014)
Net cash used in financing activities	(2,983)	(4,999)
Effect of exchange rate changes on cash and cash equivalents	281	(9,850)
Net decrease in cash and cash equivalents	(13,964)	(28,151)
Cash and cash equivalents at beginning of period	89,586	133,431
Cash and cash equivalents at end of period	75,622	105,280
Supplemental schedule of non-cash investing activities:
Capital expenditures incurred but not yet paid	$ 1,802	$ 819