Significant Accounting and Reporting Policies (Policies)	9 Months Ended
Sep. 24, 2017
Accounting Policies [Abstract]
New Accounting Pronouncements	Adopted Accounting Pronouncements In March 2016, the FASB issued Accounting Standards Update No. 2016-09, Improvements to Employee Share-Based Payment Accounting ("ASU 2016-09"). The amendments in ASU 2016-09 are meant to simplify the current accounting for share-based payment transactions, specifically the accounting for income taxes, award classification, cash flow presentation, and accounting for forfeitures. ASU 2016-09 is effective for annual and interim periods beginning after December 15, 2016. The Partnership adopted this guidance in the first quarter of 2017. The impact of the guidance included: (1) prospective recognition of excess tax benefits and tax deficiencies as income tax expense (as opposed to the previous recognition in additional paid-in-capital), approximately $0.7 million of excess tax benefits were recognized in provision for taxes for the nine months ended September 24, 2017; (2) prospective exclusion of future excess tax benefits and deficiencies in the calculation of diluted shares, which had an immaterial impact on net income per limited partner unit for the nine months ending September 24, 2017; (3) prospective classification of excess tax benefits as an operating activity within the statement of cash flows (as opposed to the previous classification as a financing activity), approximately $0.7 million of excess tax benefits were classified as an operating activity for the nine months ended September 24, 2017; (4) the formal accounting policy election to recognize forfeitures as they occur (as opposed to estimating a forfeiture accrual), which did not have a material impact on the Partnership's financial statements; (5) retrospective classification of employee taxes paid when an employer withholds shares for tax withholding purposes as a financing activity within the statement of cash flows (as opposed to the previous classification as an operating activity), approximately $0.9 million was reclassified for the nine months ended September 25, 2016. New Accounting Pronouncements In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers ("ASU 2014-09"). The ASU provides for a single, principles-based model for revenue recognition that replaces the existing revenue recognition guidance. ASU 2014-09 is effective for annual and interim periods beginning after December 15, 2017 and will replace most existing revenue recognition guidance under U.S. GAAP when it becomes effective. It permits the use of either a retrospective or modified retrospective transition method, and early adoption is permitted only as of an annual reporting period beginning after December 15, 2016, including interim reporting periods within that reporting period. The Partnership expects to adopt this standard in the first quarter of 2018 using the modified retrospective method. The Partnership anticipates the primary impact of the adoption on the consolidated financial statements will be the additional required disclosures around revenue recognition in the notes to the consolidated financial statements. The Partnership does not anticipate adoption of the standard to have a material effect on the consolidated financial statements. In February 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases ("ASU 2016-02"). The ASU requires the recognition of lease assets and lease liabilities within the balance sheet by lessees for operating leases, as well as requires additional disclosures in the consolidated financial statements regarding the amount, timing, and uncertainty of cash flows arising from leases. The ASU does not significantly change the recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee, nor does the ASU change the accounting applied by a lessor. ASU 2016-02 is effective for annual and interim periods beginning after December 15, 2018. This ASU requires a modified retrospective method and applies to the earliest period presented in the financial statements. The Partnership expects to adopt this standard in the first quarter of 2019. While the Partnership is still in the process of evaluating the effect this standard will have on the consolidated financial statements and related disclosures, the Partnership anticipates recognizing a right-of-use asset and corresponding lease liability on the consolidated balance sheet for the Santa Clara land lease, as well as other operating leases, upon adoption. In January 2017, the FASB issued Accounting Standards Update No. 2017-04, Simplifying the Test for Goodwill Impairment ("ASU 2017-04"). ASU 2017-04 eliminates step two from the goodwill impairment test. Instead, an entity should recognize an impairment charge for the amount by which a reporting unit's carrying amount exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 is effective for annual and any interim impairment tests for periods beginning after December 15, 2019 on a prospective basis. Early adoption is permitted for annual and any interim impairment tests occurring after January 1, 2017. The Partnership has adopted the standard for its 2017 annual impairment test which is currently in process. The Partnership does not anticipate the adoption of the standard to have a material effect on the consolidated financial statements.

Adopted Accounting Pronouncements

In March 2016, the FASB issued Accounting Standards Update No. 2016-09, Improvements to Employee Share-Based Payment Accounting ("ASU 2016-09"). The amendments in ASU 2016-09 are meant to simplify the current accounting for share-based payment transactions, specifically the accounting for income taxes, award classification, cash flow presentation, and accounting for forfeitures. ASU 2016-09 is effective for annual and interim periods beginning after December 15, 2016. The Partnership adopted this guidance in the first quarter of 2017. The impact of the guidance included: (1) prospective recognition of excess tax benefits and tax deficiencies as income tax expense (as opposed to the previous recognition in additional paid-in-capital), approximately $0.7 million of excess tax benefits were recognized in provision for taxes for the nine months ended September 24, 2017; (2) prospective exclusion of future excess tax benefits and deficiencies in the calculation of diluted shares, which had an immaterial impact on net income per limited partner unit for the nine months ending September 24, 2017; (3) prospective classification of excess tax benefits as an operating activity within the statement of cash flows (as opposed to the previous classification as a financing activity), approximately $0.7 million of excess tax benefits were classified as an operating activity for the nine months ended September 24, 2017; (4) the formal accounting policy election to recognize forfeitures as they occur (as opposed to estimating a forfeiture accrual), which did not have a material impact on the Partnership's financial statements; (5) retrospective classification of employee taxes paid when an employer withholds shares for tax withholding purposes as a financing activity within the statement of cash flows (as opposed to the previous classification as an operating activity), approximately $0.9 million was reclassified for the nine months ended September 25, 2016.

New Accounting Pronouncements

In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers ("ASU 2014-09"). The ASU provides for a single, principles-based model for revenue recognition that replaces the existing revenue recognition guidance. ASU 2014-09 is effective for annual and interim periods beginning after December 15, 2017 and will replace most existing revenue recognition guidance under U.S. GAAP when it becomes effective. It permits the use of either a retrospective or modified retrospective transition method, and early adoption is permitted only as of an annual reporting period beginning after December 15, 2016, including interim reporting periods within that reporting period. The Partnership expects to adopt this standard in the first quarter of 2018 using the modified retrospective method. The Partnership anticipates the primary impact of the adoption on the consolidated financial statements will be the additional required disclosures around revenue recognition in the notes to the consolidated financial statements. The Partnership does not anticipate adoption of the standard to have a material effect on the consolidated financial statements.

In February 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases ("ASU 2016-02"). The ASU requires the recognition of lease assets and lease liabilities within the balance sheet by lessees for operating leases, as well as requires additional disclosures in the consolidated financial statements regarding the amount, timing, and uncertainty of cash flows arising from leases. The ASU does not significantly change the recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee, nor does the ASU change the accounting applied by a lessor. ASU 2016-02 is effective for annual and interim periods beginning after December 15, 2018. This ASU requires a modified retrospective method and applies to the earliest period presented in the financial statements. The Partnership expects to adopt this standard in the first quarter of 2019. While the Partnership is still in the process of evaluating the effect this standard will have on the consolidated financial statements and related disclosures, the Partnership anticipates recognizing a right-of-use asset and corresponding lease liability on the consolidated balance sheet for the Santa Clara land lease, as well as other operating leases, upon adoption.

In January 2017, the FASB issued Accounting Standards Update No. 2017-04, Simplifying the Test for Goodwill Impairment ("ASU 2017-04"). ASU 2017-04 eliminates step two from the goodwill impairment test. Instead, an entity should recognize an impairment charge for the amount by which a reporting unit's carrying amount exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 is effective for annual and any interim impairment tests for periods beginning after December 15, 2019 on a prospective basis. Early adoption is permitted for annual and any interim impairment tests occurring after January 1, 2017. The Partnership has adopted the standard for its 2017 annual impairment test which is currently in process. The Partnership does not anticipate the adoption of the standard to have a material effect on the consolidated financial statements.