Accounting Standards	9 Months Ended
Accounting Standards	Oct. 26, 2019
Accounting Standards [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles	3. Accounting Standards Recently issued accounting pronouncements are disclosed in the Company’s Annual Report on Form 10-K for fiscal 2019. As of the date of this Quarterly Report on Form 10-Q, there have been no changes in the expected dates of adoption or estimated effects on the Company’s consolidated financial statements of recently issued accounting pronouncements from those disclosed in the Company’s Annual Report on Form 10-K for fiscal 2019. Further, there have been no additional accounting standards issued as of the date of this Quarterly Report on Form 10-Q that are applicable to the consolidated financial statements of the Company. Accounting standards adopted during the nine months ended October 26, 2019 are disclosed in this Quarterly Report on Form 10‑Q. Recently Adopted Accounting Standards Leases. In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-02, Leases (Topic 842) (“ASU 2016-02”) which is intended to increase transparency and comparability of accounting for lease transactions. For all leases with terms greater than 12 months, the new guidance requires lessees to recognize right-of-use assets and corresponding lease liabilities on the balance sheet and to disclose qualitative and quantitative information about lease transactions. The new standard maintains a distinction between finance leases and operating leases. As a result, the effect of the new guidance on leases in the statement of operations and statement of cash flows is largely unchanged. Effective January 27, 2019, the first day of fiscal 2020, the Company adopted the requirements of ASU 2016-02 using the transition provisions at the date of adoption instead of at the earliest comparative period presented in the financial statements. Accordingly, comparative financial statements for periods prior to the date of adoption were not adjusted. The Company elected the group of practical expedients that allowed it not to reassess the following: whether any expired or existing contracts represent leases, the classification of any expired or existing leases, and the initial direct costs for any expired or existing leases. The Company did not elect the practical expedient to use hindsight to determine the lease term. On adoption, the Company recognized approximately $71.0 million of operating lease right-of-use assets and corresponding lease liabilities on its condensed consolidated balance sheet for its operating leases with terms greater than 12 months. The adoption of ASU 2016-02 did not have a material impact on the Company’s condensed consolidated statements of operations, comprehensive income, or cash flows. Accounting Standards Not Yet Adopted Financial Instruments. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326) (“ASU 2016-13”). This ASU introduces a new accounting model, the Current Expected Credit Losses model (CECL), which could result in earlier recognition of credit losses and additional disclosures related to credit risk. The CECL model utilizes a lifetime expected credit loss measurement objective for the recognition of credit losses for financial instruments at the time the financial asset is originated or acquired. The expected credit losses are adjusted each period for changes in expected lifetime credit losses. This model replaces the multiple existing impairment models in current GAAP, which generally require that a loss be incurred before it is recognized. The new standard will also apply to receivables arising from revenue transactions such as contract assets and accounts receivables and is effective for fiscal years beginning after December 15, 2019. The standard will be applied prospectively with an adjustment to retained earnings. The Company is currently evaluating the effect of the standard on its consolidated financial statements.