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Fair Value of Financial Instruments | 3 Months Ended
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Mar. 30, 2024
Fair Value Disclosures [Abstract] |
Fair Value of Financial Instruments | Fair Value of Financial Instruments The fair values of the Company’s financial instruments are recorded using a hierarchical disclosure framework based upon the level of subjectivity of the inputs used in measuring assets and liabilities. The three levels are described below: Level 1 - Inputs are unadjusted, quoted prices in active markets for identical assets or liabilities at the measurement date. Level 2 - Inputs other than Level 1 that are directly or indirectly observable, such as quoted prices for similar assets or liabilities and quoted prices in less active markets. Level 3 - Inputs are unobservable for the asset or liability and are developed based on the best information available in the circumstances, which might include the Company’s own data. The following summarizes the valuation of the Company’s financial instruments (in thousands). The tables do not include either cash on hand or assets and liabilities that are measured at historical cost or any basis other than fair value.
|  | Fair Value Measurements at March 30, 2024 Using |  |
Description |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Total
Cash equivalents: |  |  |  |  |  |
Money market funds |  | $ | 107,746 |  |  | $ | — |  |  | $ | 107,746 |
Total cash equivalents |  | $ | 107,746 |  |  | $ | — |  |  | $ | 107,746 |
Short-term investments: |  |  |  |  |  |
Corporate debt securities |  | $ | — |  |  | $ | 58,743 |  |  | $ | 58,743 |
Government debt securities |  | — |  |  | 82,458 |  |  | 82,458 |
Total short-term investments |  | $ | — |  |  | $ | 141,201 |  |  | $ | 141,201 |
Total |  | $ | 107,746 |  |  | $ | 141,201 |  |  | $ | 248,947 |
|  | Fair Value Measurements at December 30, 2023 Using |  |
Description |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Total
Cash equivalents: |  |  |  |  |  |
Money market funds |  | $ | 137,195 |  |  | $ | — |  |  | $ | 137,195 |
Total cash equivalents |  | $ | 137,195 |  |  | $ | — |  |  | $ | 137,195 |
Short-term investments: |  |  |  |  |  |
Corporate debt securities |  | $ | — |  |  | $ | 130,047 |  |  | $ | 130,047 |
Government debt securities |  | — |  |  | 81,673 |  |  | 81,673 |
Total short-term investments |  | $ | — |  |  | $ | 211,720 |  |  | $ | 211,720 |
Total |  | $ | 137,195 |  |  | $ | 211,720 |  |  | $ | 348,915 |
Valuation methodology The Company’s cash equivalents and short-term investments that are classified as Level 2 are valued using non-binding market consensus prices that are corroborated with observable market data; quoted market prices for similar instruments in active markets; quoted prices in less active markets; or pricing models, such as a discounted cash flow model, with all significant inputs derived from or corroborated with observable market data. The Company’s foreign currency derivative instruments are valued using discounted cash flow models. The assumptions used in preparing the valuation models include foreign exchange rates, forward and spot prices for currencies and market observable data of similar instruments. The following summarizes the components of available-for-sale investments:
|  |  |  |  |  |  |  |  |  | Reported As
As of March 30, 2024 |  | Amortized Cost Basis |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  | Cash Equivalent |  | Marketable Securities
Corporate debt securities |  | $ | 59,107 |  |  | $ | 46 |  |  | $ | (410) |  |  | $ | 58,743 |  |  | $ | — |  |  | $ | 58,743 |
Government debt securities |  | 82,685 |  |  | 19 |  |  | (246) |  |  | 82,458 |  |  | — |  |  | 82,458 |
Money market funds |  | 107,746 |  |  | — |  |  | — |  |  | 107,746 |  |  | 107,746 |  |  | — |
Total |  | $ | 249,538 |  |  | $ | 65 |  |  | $ | (656) |  |  | $ | 248,947 |  |  | $ | 107,746 |  |  | $ | 141,201 |
|  |  |  |  |  |  |  |  |  | Reported As
As of December 30, 2023 |  | Amortized Cost Basis |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  | Cash Equivalent |  | Marketable Securities
Corporate debt securities |  | $ | 130,858 |  |  | $ | 69 |  |  | $ | (880) |  |  | $ | 130,047 |  |  | $ | — |  |  | $ | 130,047 |
Government debt securities |  | 82,091 |  |  | 137 |  |  | (555) |  |  | 81,673 |  |  | — |  |  | 81,673 |
Money market funds |  | 137,195 |  |  | — |  |  | — |  |  | 137,195 |  |  | 137,195 |  |  | — |
Total |  | $ | 350,144 |  |  | $ | 206 |  |  | $ | (1,435) |  |  | $ | 348,915 |  |  | $ | 137,195 |  |  | $ | 211,720 |
Contractual maturities of investments The Company’s available-for-sale investments are reported at fair value, with unrealized gains and losses, net of tax, recorded as a component of accumulated other comprehensive loss in the Condensed Consolidated Balance Sheet. The following summarizes the contractual underlying maturities of the Company’s available-for-sale investments at March 30, 2024 (in thousands):
| Cost |  | Fair Value
Due in one year or less | $ | 112,498 |  |  | $ | 112,010 |
Due after one year through five years | 29,294 |  |  | 29,191 |
| $ | 141,792 |  |  | $ | 141,201 |
Unrealized Gains and Losses The available-for-sale investments that were in a continuous unrealized loss position, aggregated by length of time that individual securities have been in a continuous loss position, were as follows (in thousands):
|  | Less Than 12 Months |  | 12 Months or Greater |  | Total
As of March 30, 2024 |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
Corporate debt securities |  | $ | 2,501 |  |  | $ | (1) |  |  | $ | 30,323 |  |  | $ | (410) |  |  | $ | 32,824 |  |  | $ | (411) |
Government debt securities |  | 36,642 |  |  | (166) |  |  | 30,174 |  |  | (79) |  |  | 66,816 |  |  | (245) |
|  | $ | 39,143 |  |  | $ | (167) |  |  | $ | 60,497 |  |  | $ | (489) |  |  | $ | 99,640 |  |  | $ | (656) |
|  | Less Than 12 Months |  | 12 Months or Greater |  | Total
As of December 30, 2023 |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
Corporate debt securities |  | $ | 12,449 |  |  | $ | (13) |  |  | $ | 95,760 |  |  | $ | (867) |  |  | $ | 108,209 |  |  | $ | (880) |
Government debt securities |  | 28,255 |  |  | (115) |  |  | 31,122 |  |  | (440) |  |  | 59,377 |  |  | (555) |
|  | $ | 40,704 |  |  | $ | (128) |  |  | $ | 126,882 |  |  | $ | (1,307) |  |  | $ | 167,586 |  |  | $ | (1,435) |
The gross unrealized losses as of March 30, 2024 and December 30, 2023 were due primarily to changes in market interest rates. At March 30, 2024 and December 30, 2023, there were no material unrealized gains associated with the Company’s available-for-sale investments. The Company records an allowance for credit loss when a decline in investment market value is due to credit-related factors. When evaluating an investment for impairment, the Company reviews factors such as the severity of the impairment, changes in underlying credit ratings, forecasted recovery, the Company’s intent to sell or the likelihood that it would be required to sell the investment before its anticipated recovery in market value and the probability that the scheduled cash payments will continue to be made. As of March 30, 2024, there were no material declines in the market value of available-for-sale investments due to credit-related factors. Fair values of other financial instruments The Company’s other financial instruments, including cash, accounts receivable and accounts payable, are recorded at amounts that approximate their fair values due to their short maturities.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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