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Convertible Senior Notes (Convertible Senior Notes Interest Expense) (Details) - 2025 Notes - Convertible debt - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 26, 2023
Debt Instrument [Line Items]    
Coupon interest $ 1,006 $ 1,313
Debt issuance cost amortization 158 195
Total interest expense [1] $ 1,164 $ 1,508
Debt instrument, effective interest rate 5.85% 5.85%
[1] The effective rate of the 2025 Notes over their expected life is 5.85%.