Collaboration Agreement, Percent Of Royalty On Net Sale

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Medicare Part D Funding Mandate

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Number of Products in Commercial Market

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Organization And Summary Of Significant Policies [Line Items]

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Sales Revenue, Discount Expected to be Earned, Percent

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Sales Revenue, Percent Discount for Prompt Payment

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Organization and Summary of Significant Accounting Policies (Details)	3 Months Ended			12 Months Ended
	Mar. 29, 2019	Mar. 31, 2018	Mar. 31, 2017	Jan. 03, 2020 USD ($) segment product	Dec. 28, 2018 USD ($)	Dec. 29, 2017 USD ($)
Organization And Summary Of Significant Policies [Line Items]
Number of operating segments \| segment				1
Impairment charge on goodwill \| $				$ 0
Percent discount for prompt payment				2.00%
Discount expected to be earned				100.00%
Medicare Part D Funding Mandate	70.00%	50.00%	50.00%
Materials in inventory balances \| $				$ 0	$ 0
Advertising expense \| $				$ 17,900,000	$ 14,800,000	$ 8,600,000
Maximum
Organization And Summary Of Significant Policies [Line Items]
Estimated useful lives				15 years
Collaborative Arrangement with GlaxoSmithKline
Organization And Summary Of Significant Policies [Line Items]
Cost of goods sold is related to product				3.00%
Resulting From Discovery Efforts
Organization And Summary Of Significant Policies [Line Items]
Number of products that entered in the commercial marketplace \| product				4
Products Derived from Cabozantinib
Organization And Summary Of Significant Policies [Line Items]
Number of products that entered in the commercial marketplace \| product				2
Products Derived From Other Compounds
Organization And Summary Of Significant Policies [Line Items]
Number of products that entered in the commercial marketplace \| product				2