Basis of Presentation and Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 28, 2015
Basis of Presentation and Significant Accounting Policies [Abstract]
Basis of presentation	Basis of presentation: Our accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the instructions for Form 10-Q and, therefore, do not include all information and footnotes which are normally included in the Form 10-K and annual report to shareholders. In our opinion, the financial statements reflect all adjustments of a normal recurring nature necessary for a fair presentation of results for the interim periods presented.
Variable interest entities (VIE)	Variable Interest Entities (VIE): A variable interest entity is an entity that lacks equity investors or whose equity investors lack a controlling interest in the entity through their equity investments. We consolidate VIEs when we are the primary beneficiary. In determining whether we are the primary beneficiary of a VIE for financial reporting purposes, we consider whether we have the power to direct the activities of the VIE that most significantly impact the economic performance of the VIE and whether we are obligated to absorb losses or the right to receive returns that would significantly impact the VIE.
Recent accounting standards	Recent accounting standards: In July 2015, the Financial Accounting Standards Board (FASB) delayed the effective date for Accounting Standards Update (ASU) 2014-09 Revenue from Contracts with Customers (Topic 606). The core principle contemplated by ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. New disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers are also required. We are required to adopt the standard in the first quarter of 2018 and retroactively apply it to our 2016 and 2017 financial results at the time of adoption. Under the new rules, we are permitted to adopt the new standard in 2017. We can also choose to apply the standard using either the full retrospective approach or a modified retrospective approach, which recognizes a cumulative catch up adjustment to the opening balance of retained earnings. We are currently assessing the impact and timing of adopting this pronouncement, and the transition method we will use. In April 2015, the FASB issued ASU 2015-03 Interest - Imputation of Interest (Subtopic 835-30) Simplifying the Presentation of Debt Issuance Costs. Under the ASU, an entity presents their debt issuance cost on the balance sheet as a direct deduction from the carrying amount of their debt liability, similar to their debt discounts, rather than as an asset as has been done previously. Amortization of the cost is reported as interest expense. We are required to adopt ASU 2015-03 in the first quarter of 2016, with early adoption also being permitted. We are required to apply the new guidance on a retrospective basis, wherein the balance sheet of each period presented is adjusted to reflect the effects of applying the new guidance. At the end of the second quarter, we had $48.6 million of debt issuance costs recorded as assets, which amount to less than 1% of our total assets.

Disclosure of accounting policy for consolidation to describe the significant judgments and assumptions made in determining whether a variable interest held by the entity requires the variable interest entity to be consolidated and (or) disclose information about its involvement with the variable interest entity; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; and the significant factors considered and judgments made in determining that the power to direct the activities that significantly impact the economic performance of the variable interest entity are shared (as defined).