Accounting Policies (Policies)	6 Months Ended
Jun. 27, 2020
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Additionally, the Condensed Consolidated Financial Statements should be read in conjunction with Item 2 of Management’s Discussion and Analysis of Financial Condition and Results of Operations, included in this Form 10-Q. Operating results for the 13-week and 26-week periods ended June 27, 2020 are not necessarily indicative of the results that may be expected for the year ending December 26, 2020. The Condensed Consolidated Balance Sheet at December 28, 2019 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. For further information, refer to the Consolidated Financial Statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 28, 2019. The Company’s fiscal year is based on a 52-53 week period ending on the last Saturday of the calendar year. Therefore, the financial results of certain 53-week fiscal years, and the associated 14-week quarters, will not be exactly comparable to the prior and subsequent 52-week fiscal years and the associated 13-week quarters. The quarters ended June 27, 2020 and June 29, 2019 both contain operating results for 13 weeks.
Significant Accounting Policies	Significant Accounting Policies For a description of the significant accounting policies and methods used in the preparation of the Company’s Condensed Consolidated Financial Statements, refer to Note 2, “Summary of Significant Accounting Policies” in the Notes to the Consolidated Financial Statements in Part II, Item 8 of the Company’s Annual Report on Form 10-K for the fiscal year ended December 28, 2019. Other than the policy discussed below, there were no material changes to the Company’s significant accounting policies during the 26-week period ended June 27, 2020.
Marketable Securities	Marketable Securities Management determines the appropriate classification of marketable securities at the time of purchase and reevaluates such designation as of each balance sheet date. All of the Company’s marketable securities were considered available-for-sale as of June 27, 2020 and December 28, 2019. Available-for-sale securities are stated at fair value. The Company recognizes impairments relating to credit losses of available-for-sale securities through an allowance for credit losses and Other income (expense) on the Company’s Condensed Consolidated Statements of Income. Impairment not relating to credit losses is recorded in Other comprehensive income (loss) on the Company’s Condensed Consolidated Balance Sheets. Testing for impairment of investments requires significant management judgment. The identification of potentially impaired investments, the determination of their fair value, and the assessment of whether any decline in value is relating to credit losses are the key judgment elements. The discovery of new information and the passage of time can significantly change these judgments. Revisions of impairment judgments are made when new information becomes known, and any resulting impairment adjustments are made at that time. The economic environment and volatility of securities markets increase the difficulty of determining fair value and assessing investment impairment. In making this assessment we evaluate the extent to which the fair value is less than the amortized cost basis, any change in credit rating of the security, adverse conditions specifically related to the security, failure of the issuer to make scheduled payments, and other relevant factors affecting the security. If it is determined that a credit loss exists, the amount of the credit loss is determined by comparing the present value of the expected future cash flows for the security to the amortized cost basis of the security, limited by the amount that the fair value is less than the amortized cost basis. The amortized cost of debt securities classified as available-for-sale is adjusted for amortization of premiums and accretion of discounts to maturity, or in the case of mortgage-backed securities, over the estimated life of the security. Such amortization and realized gains/losses are recorded within Interest income and Other income (expense), respectively, on the Company’s Consolidated Statements of Income. The cost of securities sold is based on the specific identification method.
Recently Adopted Accounting Standards and Not Yet Adopted Accounting Pronouncements	Recently Adopted Accounting Standards Financial Instruments – Credit Losses In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”). ASU 2016-13 changes how entities assess and measure credit losses of certain financial instruments, including available-for-sale securities and accounts receivable. The Company adopted the new standard as of the beginning of the 2020 fiscal year. The adoption of the standard did not have a material impact on the Company’s Condensed Consolidated Financial Statements. Receivables – Nonrefundable Fees and Other Costs In March 2017, the FASB issued Accounting Standards Update No. 2017-08, Receivables – Nonrefundable Fees and Other Costs (Topic 310-20): Premium Amortization on Purchased Callable Debt Securities (“ASU 2017-08”), which shortens the amortization period for certain callable debt securities held at a premium, requiring the premium to be amortized to the earliest call date. The Company adopted the new standard as of the beginning of the 2020 fiscal year. The adoption of the standard did not have a material impact on the Company’s Condensed Consolidated Financial Statements. Recently Issued Accounting Pronouncements Not Yet Adopted We do not expect any recently issued accounting pronouncements not yet adopted to have a material impact on the Company’s consolidated financial statements, accounting policies, processes, or systems upon adoption.

Accounting Policies (Policies)

6 Months Ended

Jun. 27, 2020

The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Additionally, the Condensed Consolidated Financial Statements should be read in conjunction with Item 2 of Management’s Discussion and Analysis of Financial Condition and Results of Operations, included in this Form 10-Q. Operating results for the 13-week and 26-week periods ended June 27, 2020 are not necessarily indicative of the results that may be expected for the year ending December 26, 2020.

The Condensed Consolidated Balance Sheet at December 28, 2019 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. For further information, refer to the Consolidated Financial Statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 28, 2019.

The Company’s fiscal year is based on a 52-53 week period ending on the last Saturday of the calendar year. Therefore, the financial results of certain 53-week fiscal years, and the associated 14-week quarters, will not be exactly comparable to the prior and subsequent 52-week fiscal years and the associated 13-week quarters. The quarters ended June 27, 2020 and June 29, 2019 both contain operating results for 13 weeks.

Significant Accounting Policies

For a description of the significant accounting policies and methods used in the preparation of the Company’s Condensed Consolidated Financial Statements, refer to Note 2, “Summary of Significant Accounting Policies” in the Notes to the Consolidated Financial Statements in Part II, Item 8 of the Company’s Annual Report on Form 10-K for the fiscal year ended December 28, 2019. Other than the policy discussed below, there were no material changes to the Company’s significant accounting policies during the 26-week period ended June 27, 2020.

Marketable Securities

Management determines the appropriate classification of marketable securities at the time of purchase and reevaluates such designation as of each balance sheet date. All of the Company’s marketable securities were considered available-for-sale as of June 27, 2020 and December 28, 2019. Available-for-sale securities are stated at fair value.

The Company recognizes impairments relating to credit losses of available-for-sale securities through an allowance for credit losses and Other income (expense) on the Company’s Condensed Consolidated Statements of Income. Impairment not relating to credit losses is recorded in Other comprehensive income (loss) on the Company’s Condensed Consolidated Balance Sheets.

Testing for impairment of investments requires significant management judgment. The identification of potentially impaired investments, the determination of their fair value, and the assessment of whether any decline in value is relating to credit losses are the key judgment elements. The discovery of new information and the passage of time can significantly change these judgments. Revisions of impairment judgments are made when new information becomes known, and any resulting impairment adjustments are made at that time. The economic environment and volatility of securities markets increase the difficulty of determining fair value and assessing investment impairment.

In making this assessment we evaluate the extent to which the fair value is less than the amortized cost basis, any change in credit rating of the security, adverse conditions specifically related to the security, failure of the issuer to make scheduled payments, and other relevant factors affecting the security. If it is determined that a credit loss exists, the amount of the credit loss is determined by comparing the present value of the expected future cash flows for the security to the amortized cost basis of the security, limited by the amount that the fair value is less than the amortized cost basis.

The amortized cost of debt securities classified as available-for-sale is adjusted for amortization of premiums and accretion of discounts to maturity, or in the case of mortgage-backed securities, over the estimated life of the security. Such amortization and realized gains/losses are recorded within Interest income and Other income (expense), respectively, on the Company’s Consolidated Statements of Income. The cost of securities sold is based on the specific identification method.

Recently Adopted Accounting Standards and Not Yet Adopted Accounting Pronouncements

Recently Adopted Accounting Standards

Financial Instruments – Credit Losses

In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”). ASU 2016-13 changes how entities assess and measure credit losses of certain financial instruments, including available-for-sale securities and accounts receivable. The Company adopted the new standard as of the beginning of the 2020 fiscal year. The adoption of the standard did not have a material impact on the Company’s Condensed Consolidated Financial Statements.

Receivables – Nonrefundable Fees and Other Costs

In March 2017, the FASB issued Accounting Standards Update No. 2017-08, Receivables – Nonrefundable Fees and Other Costs (Topic 310-20): Premium Amortization on Purchased Callable Debt Securities (“ASU 2017-08”), which shortens the amortization period for certain callable debt securities held at a premium, requiring the premium to be amortized to the earliest call date. The Company adopted the new standard as of the beginning of the 2020 fiscal year. The adoption of the standard did not have a material impact on the Company’s Condensed Consolidated Financial Statements.

Recently Issued Accounting Pronouncements Not Yet Adopted

We do not expect any recently issued accounting pronouncements not yet adopted to have a material impact on the Company’s consolidated financial statements, accounting policies, processes, or systems upon adoption.