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Organization and Summary of Significant Accounting Policies (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jul. 03, 2020 USD ($) | Apr. 03, 2020 USD ($) | Jun. 28, 2019 USD ($) | Jul. 03, 2020 USD ($) segment product $ / shares | Jun. 28, 2019 USD ($) | Jan. 03, 2020 USD ($)
Organization And Summary Of Significant Policies [Line Items] |  |  |  |  |  |
Number of business segments | segment |  |  |  | 1 |  |
Selling, general and administrative | $ 59,791,000 |  | $ 58,815,000 | $ 122,731,000 | $ 118,953,000 |
Branded prescription drug fee, accrual | 15,100,000 |  |  | 15,100,000 |  | $ 6,000,000.0
Branded prescription drug fee, accrual, current | 8,600,000 |  |  | 8,600,000 |  | 4,400,000
Branded prescription drug fee, accrual, noncurrent | $ 6,500,000 |  |  | 6,500,000 |  | $ 1,600,000
Goodwill impairment |  |  |  | $ 0 |  |
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 |  |
New information |  |  |  |  |  |
Organization And Summary Of Significant Policies [Line Items] |  |  |  |  |  |
Selling, general and administrative |  | $ 5,400,000 |  |  |  |
Decrease in earnings per share due to change in accounting estimate (USD per share) | $ / shares |  |  |  | $ 0.02 |  |

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- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1337-109256 + Details
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