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Revenues - Revenues Disaggregated by Concentration Risks (Details) - Customer Concentration Risk	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 03, 2025	Sep. 27, 2024	Oct. 03, 2025	Sep. 27, 2024	Jan. 03, 2025
Affiliates of Cencora, Inc. | Revenue
Concentration Risk [Line Items]
Percent of total revenues	20.00%	20.00%	22.00%	17.00%
Affiliates of Cencora, Inc. | Accounts Receivable
Concentration Risk [Line Items]
Percent of total revenues			24.00%		17.00%
Affiliates of McKesson Corporation | Revenue
Concentration Risk [Line Items]
Percent of total revenues	20.00%	18.00%	19.00%	16.00%
Affiliates of McKesson Corporation | Accounts Receivable
Concentration Risk [Line Items]
Percent of total revenues			26.00%		23.00%
Affiliates of CVS Health Corporation | Revenue
Concentration Risk [Line Items]
Percent of total revenues	15.00%	17.00%	15.00%	16.00%
Affiliates of CVS Health Corporation | Accounts Receivable
Concentration Risk [Line Items]
Percent of total revenues			13.00%		20.00%
Accredo Health, Incorporated | Revenue
Concentration Risk [Line Items]
Percent of total revenues	11.00%	11.00%	12.00%	10.00%
Affiliates of Optum Specialty Pharmacy | Revenue
Concentration Risk [Line Items]
Percent of total revenues	9.00%	10.00%	9.00%	9.00%
Ipsen Pharma SAS | Accounts Receivable
Concentration Risk [Line Items]
Percent of total revenues			15.00%		18.00%
Cardinal Health, Inc. | Accounts Receivable
Concentration Risk [Line Items]
Percent of total revenues			13.00%		10.00%

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