Summary of Significant Accounting Policies and Basis of Presentation (Policies)	9 Months Ended
Oct. 05, 2019
Accounting Policies [Abstract]
Adoption of New Accounting Standards and Recently Issued Accounting Standards	In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-02, “Leases.” The FASB subsequently issued ASUs 2018-01, 2018-10, 2018-11, and 2019-01, which include clarifications and provide various practical expedients and transition options related to ASU 2016-02. ASU 2016-02 provides guidance for lease accounting and stipulates that lessees need to recognize a right-of-use asset and a lease liability for substantially all leases (other than leases that meet the definition of a short-term lease). The liability is equal to the present value of future rent payments. Treatment in the consolidated statements of operations is similar to the previous treatment of operating and capital leases. In the first quarter of 2019, the Company adopted this standard retrospectively through a cumulative-effect adjustment recorded at the beginning of 2019. The Company has elected the practical expedient available under the guidance to not adjust comparative periods presented. In addition, the Company elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allow for a carry forward of the historical lease classification. The Company elected the hindsight practical expedient to reevaluate the lease term for existing leases. The election of the hindsight practical expedient resulted in the extension or reduction of lease terms for certain existing leases and adjustments to the useful lives of corresponding leasehold improvements. In the application of hindsight, the Company estimated the expected lease term based on management’s plans, including the performance of the leased properties and the associated market dynamics in relation to the overall operational, real estate and capital planning strategies of the Company. The adoption of the new standard resulted in the recognition of operating lease assets and liabilities of $241.8 million and $292.3 million, respectively, as of the beginning of 2019. The adoption of the standard also resulted in a transition adjustment to beginning of the year retained earnings of $26.9 million (net of deferred tax impact of $8.5 million). The transition adjustment relates to impairment of right of use assets included in previously impaired asset groups and the impact of hindsight on the evaluation of lease term. Remaining differences between lease assets and liabilities relate to the derecognition of lease-related liabilities and assets recorded under ASC 840, which were included in beginning lease liabilities or assets under ASC 842. In June 2016, the FASB issued ASU 2016-13, “Measurement of Credit Losses on Financial Instruments”. ASU 2016-13 changes the impairment model for most financial assets and certain other instruments. Entities will be required to use a forward-looking “expected loss” model that will replace the current “incurred loss” model, which will generally result in the earlier recognition of credit losses. The Company is required to adopt this update in the first quarter of fiscal 2020. The Company is currently reviewing the provisions of the new standard and establishing revised processes and controls to estimate expected losses for trade and other receivables. The standard is not expected to have a significant impact on the Company’s consolidated financial statements.

Summary of Significant Accounting Policies and Basis of Presentation (Policies)

9 Months Ended

Oct. 05, 2019

Adoption of New Accounting Standards and Recently Issued Accounting Standards

In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-02, “Leases.” The FASB subsequently issued ASUs 2018-01, 2018-10, 2018-11, and 2019-01, which include clarifications and provide various practical expedients and transition options related to ASU 2016-02. ASU 2016-02 provides guidance for lease accounting and stipulates that lessees need to recognize a right-of-use asset and a lease liability for substantially all leases (other than leases that meet the definition of a short-term lease). The liability is equal to the present value of future rent payments. Treatment in the consolidated statements of operations is similar to the previous treatment of operating and capital leases.

In the first quarter of 2019, the Company adopted this standard retrospectively through a cumulative-effect adjustment recorded at the beginning of 2019. The Company has elected the practical expedient available under the guidance to not adjust comparative periods presented. In addition, the Company elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allow for a carry forward of the historical lease classification. The Company elected the hindsight practical expedient to reevaluate the lease term for existing leases. The election of the hindsight practical expedient resulted in the extension or reduction of lease terms for certain existing leases and adjustments to the useful lives of corresponding leasehold improvements. In the application of hindsight, the Company estimated the expected lease term based on management’s plans, including the performance of the leased properties and the associated market dynamics in relation to the overall operational, real estate and capital planning strategies of the Company.

The adoption of the new standard resulted in the recognition of operating lease assets and liabilities of $241.8 million and $292.3 million, respectively, as of the beginning of 2019. The adoption of the standard also resulted in a transition adjustment to beginning of the year retained earnings of $26.9 million (net of deferred tax impact of $8.5 million). The transition adjustment relates to impairment of right of use assets included in previously impaired asset groups and the impact of hindsight on the evaluation of lease term. Remaining differences between lease assets and liabilities relate to the derecognition of lease-related liabilities and assets recorded under ASC 840, which were included in beginning lease liabilities or assets under ASC 842.

In June 2016, the FASB issued ASU 2016-13, “Measurement of Credit Losses on Financial Instruments”. ASU 2016-13 changes the impairment model for most financial assets and certain other instruments. Entities will be required to use a forward-looking “expected loss” model that will replace the current “incurred loss” model, which will generally result in the earlier recognition of credit losses. The Company is required to adopt this update in the first quarter of fiscal 2020. The Company is currently reviewing the provisions of the new standard and establishing revised processes and controls to estimate expected losses for trade and other receivables. The standard is not expected to have a significant impact on the Company’s consolidated financial statements.