Basis of Presentation	6 Months Ended
Mar. 14, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited Consolidated Financial Statements of Luby’s, Inc. (the “Company” or “Luby’s”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements that are prepared for the Company’s Annual Report on Form 10-K. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation have been included. Operating results for the quarter ended March 14, 2018 are not necessarily indicative of the results that may be expected for the fiscal year ending August 29, 2018. The Consolidated Balance Sheet dated August 30, 2017, included in this Quarterly Report on Form 10-Q (this “Form 10-Q”), has been derived from the audited Consolidated Financial Statements as of that date. However, this Form 10-Q does not include all of the information and footnotes required by GAAP for audited, year-end financial statements. Therefore, these financial statements should be read in conjunction with the audited Consolidated Financial Statements and footnotes included in the Company’s Annual Report on Form 10-K for the fiscal year ended August 30, 2017. Recently Adopted Accounting Pronouncements In August 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-15. The amendments in ASU 2014-15 are intended to define management’s responsibility to evaluate whether there is substantial doubt about an organization’s ability to continue as a going concern and to provide related footnote disclosures. Under GAAP, financial statements are prepared under the presumption that the reporting organization will continue to operate as a going concern, except in limited circumstances. The going concern basis of accounting is critical to financial reporting because it establishes the fundamental basis for measuring and classifying assets and liabilities. Currently, GAAP lacks guidance about management’s responsibility to evaluate whether there is substantial doubt about the organization’s ability to continue as a going concern or to provide related footnote disclosures. This ASU provides guidance to an organization’s management, with principles and definitions that are intended to reduce diversity in the timing and content of disclosures that are commonly provided by organizations today in the financial statement footnotes. The pronouncement is effective for fiscal years and interim periods within those fiscal years, after December 31, 2016, which required us to adopt these provisions in the first quarter of fiscal 2018. We adopted this pronouncement effective August 31, 2017 and the adoption did not have an impact on our consolidated financial statements or disclosures to our consolidated financial statements. In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory (Topic 330). This update requires inventory within the scope of the standard to be measured at the lower of cost and net realizable value. Net realizable value is defined as the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. This update is effective for annual and interim periods beginning after December 15, 2016, which required us to adopt these provisions in the first quarter of fiscal 2018. We adopted this pronouncement in the first quarter of fiscal 2018 and the adoption did not have an impact on our consolidated financial statements or disclosures to our consolidated financial statements. In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Deferred Taxes (Topic 740). This update requires that deferred tax liabilities and assets be classified as noncurrent in a classified balance sheet. This update is effective for annual and interim periods beginning after December 15, 2016, which required us to adopt these provisions in the first quarter of fiscal 2018. The interim period adoption of this guidance had an immaterial impact on our consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting (Topic 718). This update was issued as part of the FASB’s simplification initiative and affects all entities that issue share-based payment awards to their employees. The amendments in this update cover such areas as the recognition of excess tax benefits and deficiencies, the classification of those excess tax benefits on the statement of cash flows, an accounting policy election for forfeitures, the amount an employer can withhold to cover income taxes and still qualify for equity classification and the classification of those taxes paid on the statement of cash flows. This update is effective for annual and interim periods for fiscal years beginning after December 15, 2016, which required us to adopt these provisions in the first quarter of fiscal 2018. The impact on the Company’s consolidated financial statements from interim period adoption of ASU 2016-09 was immaterial. The Company maintains its accounting policy for forfeitures and continues to estimate the total number of awards for which the requisite service period will not be rendered for book expense purposes. New Accounting Pronouncements - "to be Adopted" In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This update provides a comprehensive new revenue recognition model that requires a company to recognize revenue to depict the transfer of goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. The guidance also requires additional disclosure about the nature, amount, timing, and uncertainty of revenue and cash flows arising from customer contracts. This update is effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period, which will require us to adopt these provisions in the first quarter of fiscal 2019. Early application is not permitted. This update permits the use of either the retrospective or cumulative effect transition method. Further, in March 2016, the FASB issued ASU No. 2016–08, “Revenue from Contracts with Customers: Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” which clarifies the guidance in ASU No. 2014–09 for evaluating when another party, along with the entity, is involved in providing a good or service to a customer. In April 2016, the FASB issued ASU No. 2016–10, “Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing,” which clarifies the guidance in ASU No. 2014–09 regarding assessing whether promises to transfer goods or services are distinct, and whether an entity's promise to grant a license provides a customer with a right to use or right to access the entity's intellectual property. The Company plans to adopt the standard in the first quarter of fiscal 2019, which is the first fiscal quarter of the annual reporting period beginning after December 15, 2017. We have not yet decided on a method of transition upon adoption. The Company expects the pronouncement may impact gift card revenue recognition and the recognition of the initial franchise fee which is currently recognized upon the opening of a franchise restaurant. We are further evaluating the effect this guidance will have on our consolidated financial statements and related disclosures. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). This update requires a lessee to recognize on the balance sheet a liability to make lease payments and a corresponding right-of-use asset. The update also requires additional disclosures about the amount, timing and uncertainty of cash flows arising from leases. This update is effective for annual and interim periods beginning after December 15, 2018, which will require us to adopt these provisions in the first quarter of fiscal 2020. This standard requires adoption based upon a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with optional practical expedients. Based on a preliminary assessment, the Company expects that most of its operating lease commitments will be subject to the new guidance and recognized as operating lease liabilities and right–of-use assets upon adoption, resulting in a significant increase in the assets and liabilities on our consolidated balance sheet. The Company is continuing its assessment, which may identify additional impacts this standard will have on its consolidated financial statements and related disclosures. In March 2016, the FASB issued ASU No. 2016–04, “Liabilities – Extinguishment of Liabilities: Recognition of Breakage for Certain Prepaid Stored–Value Products,” which is intended to eliminate current and future diversity in practice related to derecognition of prepaid stored–value product liability in a way that aligns with the new revenue recognition guidance. The update is effective for fiscal years beginning after December 15, 2017; however, early application is permitted. We are evaluating the impact on the Company's consolidated financial statements and do not expect the adoption to have a material impact on our consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230). This update provides clarification regarding how certain cash receipts and cash payments are presented and classified in the statement of cash flows. This update addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. This update is effective for annual and interim periods beginning after December 15, 2017, which will require us to adopt these provisions in the first quarter of fiscal 2019 using a retrospective approach. Early adoption is permitted. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This update allows companies the option to reclassify to retained earnings the tax effects related to items in Accumulated other comprehensive income (loss) as a result of the Tax Cuts and Jobs Act that was enacted on December 22, 2017. This update is effective in fiscal years, including interim periods, beginning after December 15, 2018, and early adoption is permitted. This guidance should be applied either in the period of adoption or retrospectively to each period in which the effects of the change in the U.S. federal income tax rate in the Tax Cuts and Jobs Act is recognized. The Company is still completing its assessment of the impacts including the timing of adoption. Subsequent Events On April 20, 2018, we amended our 2016 Credit Agreement (as defined below) effective as of March 14, 2018. The amendment accelerates the maturity date of the credit agreement to May 1, 2019, approximately 14 months after the balance sheet date, March 14, 2018. As a result of the change to the maturity date, the Company will recognize approximately $0.3 million accelerated amortization of deferred financing fees in the third quarter of fiscal 2018.

Basis of Presentation

The accompanying unaudited Consolidated Financial Statements of Luby’s, Inc. (the “Company” or “Luby’s”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements that are prepared for the Company’s Annual Report on Form 10-K. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation have been included. Operating results for the quarter ended March 14, 2018 are not necessarily indicative of the results that may be expected for the fiscal year ending August 29, 2018.

The Consolidated Balance Sheet dated August 30, 2017, included in this Quarterly Report on Form 10-Q (this “Form 10-Q”), has been derived from the audited Consolidated Financial Statements as of that date. However, this Form 10-Q does not include all of the information and footnotes required by GAAP for audited, year-end financial statements. Therefore, these financial statements should be read in conjunction with the audited Consolidated Financial Statements and footnotes included in the Company’s Annual Report on Form 10-K for the fiscal year ended August 30, 2017.

Recently Adopted Accounting Pronouncements

In August 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-15. The amendments in ASU 2014-15 are intended to define management’s responsibility to evaluate whether there is substantial doubt about an organization’s ability to continue as a going concern and to provide related footnote disclosures. Under GAAP, financial statements are prepared under the presumption that the reporting organization will continue to operate as a going concern, except in limited circumstances. The going concern basis of accounting is critical to financial reporting because it establishes the fundamental basis for measuring and classifying assets and liabilities. Currently, GAAP lacks guidance about management’s responsibility to evaluate whether there is substantial doubt about the organization’s ability to continue as a going concern or to provide related footnote disclosures. This ASU provides guidance to an organization’s management, with principles and definitions that are intended to reduce diversity in the timing and content of disclosures that are commonly provided by organizations today in the financial statement footnotes. The pronouncement is effective for fiscal years and interim periods within those fiscal years, after December 31, 2016, which required us to adopt these provisions in the first quarter of fiscal 2018. We adopted this pronouncement effective August 31, 2017 and the adoption did not have an impact on our consolidated financial statements or disclosures to our consolidated financial statements.

In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory (Topic 330). This update requires inventory within the scope of the standard to be measured at the lower of cost and net realizable value. Net realizable value is defined as the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. This update is effective for annual and interim periods beginning after December 15, 2016, which required us to adopt these provisions in the first quarter of fiscal 2018. We adopted this pronouncement in the first quarter of fiscal 2018 and the adoption did not have an impact on our consolidated financial statements or disclosures to our consolidated financial statements.

In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Deferred Taxes (Topic 740). This update requires that deferred tax liabilities and assets be classified as noncurrent in a classified balance sheet. This update is effective for annual and interim periods beginning after December 15, 2016, which required us to adopt these provisions in the first quarter of fiscal 2018. The interim period adoption of this guidance had an immaterial impact on our consolidated financial statements.

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting (Topic 718). This update was issued as part of the FASB’s simplification initiative and affects all entities that issue share-based payment awards to their employees. The amendments in this update cover such areas as the recognition of excess tax benefits and deficiencies, the classification of those excess tax benefits on the statement of cash flows, an accounting policy election for forfeitures, the amount an employer can withhold to cover income taxes and still qualify for equity classification and the classification of those taxes paid on the statement of cash flows. This update is effective for annual and interim periods for fiscal years beginning after December 15, 2016, which required us to adopt these provisions in the first quarter of fiscal 2018. The impact on the Company’s consolidated financial statements from interim period adoption of ASU 2016-09 was immaterial. The Company maintains its accounting policy for forfeitures and continues to estimate the total number of awards for which the requisite service period will not be rendered for book expense purposes.

New Accounting Pronouncements - "to be Adopted"

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This update provides a comprehensive new revenue recognition model that requires a company to recognize revenue to depict the transfer of goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. The guidance also requires additional disclosure about the nature, amount, timing, and uncertainty of revenue and cash flows arising from customer contracts. This update is effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period, which will require us to adopt these provisions in the first quarter of fiscal 2019. Early application is not permitted. This update permits the use of either the retrospective or cumulative effect transition method. Further, in March 2016, the FASB issued ASU No. 2016–08, “Revenue from Contracts with Customers: Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” which clarifies the guidance in ASU No. 2014–09 for evaluating when another party, along with the entity, is involved in providing a good or service to a customer. In April 2016, the FASB issued ASU No. 2016–10, “Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing,” which clarifies the guidance in ASU No. 2014–09 regarding assessing whether promises to transfer goods or services are distinct, and whether an entity's promise to grant a license provides a customer with a right to use or right to access the entity's intellectual property. The Company plans to adopt the standard in the first quarter of fiscal 2019, which is the first fiscal quarter of the annual reporting period beginning after December 15, 2017. We have not yet decided on a method of transition upon adoption. The Company expects the pronouncement may impact gift card revenue recognition and the recognition of the initial franchise fee which is currently recognized upon the opening of a franchise restaurant. We are further evaluating the effect this guidance will have on our consolidated financial statements and related disclosures.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). This update requires a lessee to recognize on the balance sheet a liability to make lease payments and a corresponding right-of-use asset. The update also requires additional disclosures about the amount, timing and uncertainty of cash flows arising from leases. This update is effective for annual and interim periods beginning after December 15, 2018, which will require us to adopt these provisions in the first quarter of fiscal 2020. This standard requires adoption based upon a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with optional practical expedients. Based on a preliminary assessment, the Company expects that most of its operating lease commitments will be subject to the new guidance and recognized as operating lease liabilities and right–of-use assets upon adoption, resulting in a significant increase in the assets and liabilities on our consolidated balance sheet. The Company is continuing its assessment, which may identify additional impacts this standard will have on its consolidated financial statements and related disclosures.

In March 2016, the FASB issued ASU No. 2016–04, “Liabilities – Extinguishment of Liabilities: Recognition of Breakage for Certain Prepaid Stored–Value Products,” which is intended to eliminate current and future diversity in practice related to derecognition of prepaid stored–value product liability in a way that aligns with the new revenue recognition guidance. The update is effective for fiscal years beginning after December 15, 2017; however, early application is permitted. We are evaluating the impact on the Company's consolidated financial statements and do not expect the adoption to have a material impact on our consolidated financial statements.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230). This update provides clarification regarding how certain cash receipts and cash payments are presented and classified in the statement of cash flows. This update addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. This update is effective for annual and interim periods beginning after December 15, 2017, which will require us to adopt these provisions in the first quarter of fiscal 2019 using a retrospective approach. Early adoption is permitted. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements.

In February 2018, the FASB issued ASU 2018-02, Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This update allows companies the option to reclassify to retained earnings the tax effects related to items in Accumulated other comprehensive income (loss) as a result of the Tax Cuts and Jobs Act that was enacted on December 22, 2017. This update is effective in fiscal years, including interim periods, beginning after December 15, 2018, and early adoption is permitted. This guidance should be applied either in the period of adoption or retrospectively to each period in which the effects of the change in the U.S. federal income tax rate in the Tax Cuts and Jobs Act is recognized. The Company is still completing its assessment of the impacts including the timing of adoption.

Subsequent Events

On April 20, 2018, we amended our 2016 Credit Agreement (as defined below) effective as of March 14, 2018. The amendment accelerates the maturity date of the credit agreement to May 1, 2019, approximately 14 months after the balance sheet date, March 14, 2018. As a result of the change to the maturity date, the Company will recognize approximately $0.3 million accelerated amortization of deferred financing fees in the third quarter of fiscal 2018.