Basis of Presentation and Summary of Significant Accounting Policies	3 Months Ended
Mar. 28, 2017
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation The accompanying unaudited consolidated financial statements included herein have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and the rules and regulations of the Securities and Exchange Commission (“SEC”). For additional information, these unaudited consolidated financial statements should be read in conjunction with the financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended January 3, 2017 ("2016 Form 10-K"). The accounting policies used in preparing these unaudited consolidated financial statements are the same as those described in our 2016 Form 10-K. The Company’s fiscal year ends on the Tuesday closest to December 31. Fiscal year 2017 is a fifty-two week period ending January 2, 2018. In a fifty-two week fiscal year, the first, second and third quarters each include twelve weeks of operations and the fourth quarter includes sixteen weeks of operations. Fiscal year 2016 is the fifty-three week period ended January 3, 2017. In a fifty-three week fiscal year, the first, second and third quarters each include twelve weeks of operations and the fourth quarter includes seventeen weeks of operations. For fiscal year 2017, the Company’s accompanying financial statements reflect the twelve weeks ended March 28, 2017. For fiscal year 2016, the Company’s accompanying financial statements reflect the twelve weeks ended March 22, 2016. In the opinion of management, the accompanying consolidated financial statements reflect all adjustments which are necessary for a fair presentation of the consolidated financial position, results of operations and cash flows for the periods presented. The results of operations for such interim periods are not necessarily indicative of results of operations to be expected for the full fiscal year. Principles of Consolidation The accompanying unaudited consolidated financial statements include the accounts of the Company and its wholly and majority owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. Use of Estimates The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Management believes that such estimates have been based on reasonable and supportable assumptions and the resulting estimates are reasonable for use in the preparation of the consolidated financial statements. Actual results could differ from these estimates. The Company’s significant estimates include estimates for impairment of goodwill, intangible assets and property and equipment, valuations provided in business combinations, insurance reserves, restaurant closure reserves, stock-based compensation, contingent liabilities, certain leasing activities and income tax valuation allowances. Recently Issued Accounting Standards In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standard Update ("ASU") No. 2016-02, Leases (Topic 842). This guidance will result in key changes to lease accounting and will aim to bring leases onto balance sheets to give investors, lenders, and other financial statement users a more comprehensive view of a company's long-term financial obligations as well as the assets it owns versus leases. The new leasing standard will be effective for fiscal years beginning after December 15, 2018, and for interim periods within those fiscal years. The Company is currently evaluating the impact this guidance will have on our consolidated financial statements as well as the expected adoption method. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which provides a comprehensive new revenue recognition model that requires a company to recognize revenue in an amount that reflects the consideration it expects to receive for the transfer of promised goods or services to its customers. The standard also requires additional disclosure regarding the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. This ASU is effective for annual periods and interim periods beginning after December 15, 2017. The ASU is to be applied retrospectively or using a cumulative effect transition method. The Company expects to adopt this new guidance in fiscal year 2018, and has not yet selected a transition method. The Company does not currently believe the new revenue recognition standard will materially impact the recognition of company restaurant sales or royalty fees from franchisees. Additionally, lease rental revenues are not within the scope of this new guidance. Based on a preliminary assessment, the Company expects the adoption of the new guidance to change the timing of the recognition of initial franchise fees, including franchise and development fees, and renewal fees. Currently, these fees are generally recognized upfront upon either the opening of the respective restaurant or when a renewal agreement becomes effective. The Company currently believes the new guidance will generally require these fees to be recognized over the term of the related franchise agreement for the respective restaurant. The Company is continuing to evaluate the impact the adoption of this new guidance will have on these and other revenue transactions in addition to the impact on accounting policies and related disclosures. Recently Adopted Accounting Standards In March 2016, the FASB issued ASU No. 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, which is intended to simplify various aspects of accounting for share-based compensation arrangements, including the income tax impact, classification on the statement of cash flows and forfeitures. This standard is effective for annual reporting periods beginning after December 15, 2016, and interim periods within that reporting period, with early adoption permitted. As ASU 2016-09 requires recognition of certain tax benefits associated with stock-based compensation on a discrete basis, the Company anticipates that its effective tax rate may vary from quarter to quarter depending on the Company’s stock price in each period. The Company anticipates that ASU 2016-09 will potentially increase or lower its effective tax rate, relative to the U.S. statutory rate, depending on the amount of stock-based compensation deductible for tax related to the vesting of restricted stock awards or exercise of stock options as compared to cumulative stock-based compensation recorded. The Company adopted ASU 2016-09 during the first fiscal quarter of 2017. The Company will continue to estimate forfeitures.

Basis of Presentation and Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited consolidated financial statements included herein have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and the rules and regulations of the Securities and Exchange Commission (“SEC”). For additional information, these unaudited consolidated financial statements should be read in conjunction with the financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended January 3, 2017 ("2016 Form 10-K"). The accounting policies used in preparing these unaudited consolidated financial statements are the same as those described in our 2016 Form 10-K.

The Company’s fiscal year ends on the Tuesday closest to December 31. Fiscal year 2017 is a fifty-two week period ending January 2, 2018. In a fifty-two week fiscal year, the first, second and third quarters each include twelve weeks of operations and the fourth quarter includes sixteen weeks of operations. Fiscal year 2016 is the fifty-three week period ended January 3, 2017. In a fifty-three week fiscal year, the first, second and third quarters each include twelve weeks of operations and the fourth quarter includes seventeen weeks of operations. For fiscal year 2017, the Company’s accompanying financial statements reflect the twelve weeks ended March 28, 2017. For fiscal year 2016, the Company’s accompanying financial statements reflect the twelve weeks ended March 22, 2016.

In the opinion of management, the accompanying consolidated financial statements reflect all adjustments which are necessary for a fair presentation of the consolidated financial position, results of operations and cash flows for the periods presented. The results of operations for such interim periods are not necessarily indicative of results of operations to be expected for the full fiscal year.

Principles of Consolidation

The accompanying unaudited consolidated financial statements include the accounts of the Company and its wholly and majority owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Management believes that such estimates have been based on reasonable and supportable assumptions and the resulting estimates are reasonable for use in the preparation of the consolidated financial statements. Actual results could differ from these estimates. The Company’s significant estimates include estimates for impairment of goodwill, intangible assets and property and equipment, valuations provided in business combinations, insurance reserves, restaurant closure reserves, stock-based compensation, contingent liabilities, certain leasing activities and income tax valuation allowances.

Recently Issued Accounting Standards

In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standard Update ("ASU") No. 2016-02, Leases (Topic 842). This guidance will result in key changes to lease accounting and will aim to bring leases onto balance sheets to give investors, lenders, and other financial statement users a more comprehensive view of a company's long-term financial obligations as well as the assets it owns versus leases. The new leasing standard will be effective for fiscal years beginning after December 15, 2018, and for interim periods within those fiscal years. The Company is currently evaluating the impact this guidance will have on our consolidated financial statements as well as the expected adoption method.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which provides a comprehensive new revenue recognition model that requires a company to recognize revenue in an amount that reflects the consideration it expects to receive for the transfer of promised goods or services to its customers. The standard also requires additional disclosure regarding the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. This ASU is effective for annual periods and interim periods beginning after December 15, 2017. The ASU is to be applied retrospectively or using a cumulative effect transition method. The Company expects to adopt this new guidance in fiscal year 2018, and has not yet selected a transition method. The Company does not currently believe the new revenue recognition standard will materially impact the recognition of company restaurant sales or royalty fees from franchisees. Additionally, lease rental revenues are not within the scope of this new guidance. Based on a preliminary assessment, the Company expects the adoption of the new guidance to change the timing of the recognition of initial franchise fees, including franchise and development fees, and renewal fees. Currently, these fees are generally recognized upfront upon either the opening of the respective restaurant or when a renewal agreement becomes effective. The Company currently believes the new guidance will generally require these fees to be recognized over the term of the related franchise agreement for the respective restaurant. The Company is continuing to evaluate the impact the adoption of this new guidance will have on these and other revenue transactions in addition to the impact on accounting policies and related disclosures.

Recently Adopted Accounting Standards

In March 2016, the FASB issued ASU No. 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, which is intended to simplify various aspects of accounting for share-based compensation arrangements, including the income tax impact, classification on the statement of cash flows and forfeitures. This standard is effective for annual reporting periods beginning after December 15, 2016, and interim periods within that reporting period, with early adoption permitted. As ASU 2016-09 requires recognition of certain tax benefits associated with stock-based compensation on a discrete basis, the Company anticipates that its effective tax rate may vary from quarter to quarter depending on the Company’s stock price in each period. The Company anticipates that ASU 2016-09 will potentially increase or lower its effective tax rate, relative to the U.S. statutory rate, depending on the amount of stock-based compensation deductible for tax related to the vesting of restricted stock awards or exercise of stock options as compared to cumulative stock-based compensation recorded. The Company adopted ASU 2016-09 during the first fiscal quarter of 2017. The Company will continue to estimate forfeitures.