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Convertible Senior Notes (Convertible Senior Notes Interest Expense) (Details) - 2025 Notes - Convertible debt - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 29, 2025	Jun. 30, 2024	Jun. 29, 2025	Jun. 30, 2024
Debt Instrument [Line Items]
Coupon interest		$ 86	$ 259	$ 345	$ 1,265
Debt issuance cost amortization		14	40	56	198
Total interest expense	[1]	$ 100	$ 299	$ 401	$ 1,463
Debt instrument, effective interest rate		5.85%		5.85%
[1] The effective rate of the 2025 Notes was 5.85%.

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