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Convertible Senior Notes (Convertible Senior Notes Interest Expense) (Details) - 2025 Notes - Convertible debt - USD ($) $ in Thousands		3 Months Ended
		Mar. 30, 2025	Mar. 31, 2024
Debt Instrument [Line Items]
Coupon interest		$ 259	$ 1,006
Debt issuance cost amortization		42	158
Total interest expense	[1]	$ 301	$ 1,164
Debt instrument, effective interest rate		5.85%
[1] The effective rate of the 2025 Notes over their expected life is 5.85%.

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