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Organization and Summary of Significant Accounting Policies - Narrative (Details) € in Millions | 12 Months Ended |
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Dec. 31, 2021 USD ($) segment product country | Jan. 01, 2021 USD ($) | Jan. 03, 2020 USD ($) | Dec. 31, 2021 EUR (€) derivative_instrument
Organization And Summary Of Significant Policies [Line Items] |  |  |  |
Number of countries with FDA approval, excluding the U.S. | country | 61 |  |  |
Number of operating segments | segment | 1 |  |  |
Impairment charge on goodwill | $ 0 | $ 0 | $ 0 |
Percent discount for prompt payment | 2.00% |  |  |
Discount expected to be earned | 100.00% |  |  |
Medicare Part D funding mandate | 70.00% |  |  |
Cost of goods sold is related to product | 3.00% |  |  |
Advertising expense | $ 31,800,000 | $ 25,100,000 | $ 17,900,000 |
Foreign Exchange Forward |  |  |  |
Organization And Summary Of Significant Policies [Line Items] |  |  |  |
Number of forward contract outstanding | derivative_instrument |  |  |  | 1
Forward contract outstanding, amount | € |  |  |  | € 9.8
Forward contract maturity (in months) | 3 months |  |  |
Net gain on maturity of forward contracts | $ 800,000 |  |  |
Maximum |  |  |  |
Organization And Summary Of Significant Policies [Line Items] |  |  |  |
Estimated useful lives | 15 years |  |  |
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 Other Compounds |  |  |  |
Organization And Summary Of Significant Policies [Line Items] |  |  |  |
Number of products that entered in the commercial marketplace | product | 2 |  |  |

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