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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 28, 2026
Mar. 29, 2025
Cash Provided by (Used in) Operating Activity, Continuing Operation [Abstract]    
Net income $ 20,384 $ 6,401
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 9,172 8,830
Reduction in the carrying amount of right-of-use assets 1,566 1,803
Stock-based compensation expense 8,063 9,796
Deferred income tax benefit (1,136) (691)
Provision for excess and obsolete inventories 4,804 2,879
Restructuring charges 15,994 2,102
Income from equity investment (1,517) 0
Other adjustments to reconcile net income to net cash provided by operating activities 25 (1,024)
Changes in assets and liabilities:    
Accounts receivable (7,014) 6,293
Inventories (7,428) (10,196)
Prepaid expenses and other current assets (5,743) (3,794)
Other assets 32 469
Accounts payable 7,525 10,535
Accrued liabilities (5,264) (7,926)
Other liabilities 1,389 712
Deferred revenues 5,981 (620)
Operating lease liabilities (1,872) (2,030)
Net cash provided by operating activities 44,961 23,539
Cash Provided by (Used in) Investing Activity, Continuing Operation [Abstract]    
Acquisition of property, plant and equipment (15,192) (18,584)
Proceeds from sale of assets 76 0
Purchase of equity investment 0 (67,156)
Purchases of marketable securities (37,110) (26,330)
Proceeds from maturities and sales of marketable securities 28,819 27,410
Net cash used in investing activities (23,407) (84,660)
Cash flows from financing activities:    
Proceeds from issuances of common stock 5,836 21,576
Purchase of common stock through stock repurchase program 0 (22,135)
Tax withholdings related to net share settlements of equity awards (6,751) (2,132)
Payments on term loan (281) (273)
Net cash used in financing activities (1,196) (2,964)
Effect of exchange rate changes on cash, cash equivalents and restricted cash (957) 180
Net increase (decrease) in cash, cash equivalents and restricted cash 19,401 (63,905)
Cash, cash equivalents and restricted cash, beginning of year 107,047 197,206
Cash, cash equivalents and restricted cash, end of period 126,448 133,301
Non-cash investing and financing activities:    
Decrease in accounts payable and accrued liabilities related to property, plant and equipment purchases (562) (8,563)
Operating lease, right-of-use assets obtained in exchange for lease obligations 2,225 0
Supplemental disclosure of cash flow information:    
Cash paid for income taxes, net 1,042 1,826
Cash paid for interest 85 92
Operating cash outflows from operating leases 2,214 2,414
Reconciliation of cash, cash equivalents and restricted cash:    
Cash and cash equivalents 123,539 129,889
Restricted cash, current 897 967
Restricted cash 2,012 2,445
Total cash, cash equivalents and restricted cash $ 126,448 $ 133,301