Summary of Significant Accounting Policies (Policies)	12 Months Ended
Dec. 25, 2019
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates. In preparing our Consolidated Financial Statements in conformity with U.S. generally accepted accounting principles, management is required to make certain assumptions and estimates that affect reported amounts of assets, liabilities, revenues, expenses and the disclosure of contingencies. In making these assumptions and estimates, management may from time to time seek advice and consider information provided by actuaries and other experts in a particular area. Actual amounts could differ materially from these estimates.
Consolidation Policy	Consolidation Policy. Our Consolidated Financial Statements include the financial statements of Denny’s Corporation and its wholly-owned subsidiaries: Denny’s, Inc., DFO, LLC, Denny’s Realty, LLC and East Main Insurance Company. All significant intercompany balances and transactions have been eliminated in consolidation.
Fiscal Year	Fiscal Year. Our fiscal year ends on the last Wednesday in December. As a result, a fifty-third week is added to a fiscal year every five or six years.
Cash and Cash Equivalents	Cash and Cash Equivalents. Our policy is to invest cash in excess of operating requirements in short-term highly liquid investments with an original maturity of three months or less, which we consider to be cash equivalents.
Receivables	Receivables. Receivables, which are recorded at net realizable value, primarily consist of trade accounts receivables and financing receivables from franchisees, vendor receivables and credit card receivables. Trade accounts receivables from franchisees consist of royalties, advertising and rent. Financing receivables from franchisees primarily consist of notes from franchisees related to the roll-out of equipment. We accrue interest on notes receivable based on the contractual terms. The allowance for doubtful accounts is based on pre-defined criteria and management’s judgment of existing receivables. Receivables that are ultimately deemed to be uncollectible, and for which collection efforts have been exhausted, are written off against the allowance for doubtful accounts.
Inventories	Inventories. Inventories consist of food and beverages and are valued at the lower of cost and net realizable value.
Property and Depreciation	Property and Depreciation. Owned property is stated at cost. Property under finance leases are stated at the lesser of its fair value or the net present value of the related minimum lease payments at the lease inception. Maintenance and repairs are expensed as incurred. We depreciate owned property over its estimated useful life using the straight-line method. We amortize property held under finance leases (at capitalized value) over the lesser of its estimated useful life or the lease term. Building assets are assigned estimated useful lives that range from five to 30 years. Equipment assets are assigned lives that range from two to ten years. Leasehold improvements are generally assigned lives between five and 15 years limited by the expected lease term.
Goodwill	Goodwill. Amounts recorded as goodwill primarily represent excess reorganization value recognized as a result of our 1998 bankruptcy. We also record goodwill in connection with the acquisition of restaurants from franchisees. Likewise, upon the sale of restaurant operations to franchisees, goodwill is decremented. We test goodwill for impairment at each fiscal year end and more frequently if circumstances indicate impairment may exist. Such indicators include, but are not limited to, a significant decline in our expected future cash flows, a significant adverse decline in our stock price, significantly adverse legal developments and a significant change in the business climate.
Intangible Assets	Intangible Assets. Intangible assets consist primarily of trade names and reacquired franchise rights. Trade names are considered indefinite-lived intangible assets and are not amortized. Reacquired franchise rights are amortized using the straight-line basis over the term of the related franchise agreement. Reacquired franchise rights resulting from acquisitions are accounted for using the purchase method of accounting and are estimated by management based on the fair value of the assets received. We test trade name assets for impairment at each fiscal year end, and more frequently if circumstances indicate impairment may exist. We assess impairment of reacquired franchise rights whenever changes or events indicate that the carrying value may not be recoverable. Costs incurred to renew or extend the term of recognized intangible assets are recorded in general and administrative expenses in our Consolidated Statements of Income.
Marketable Securities	Marketable Securities. Marketable securities included in investments consist of available for sale equity instruments and are recorded at fair market value in our Consolidated Balance Sheets. Marketable securities included in other noncurrent assets consist of trading debt and equity mutual funds and are recorded at fair market value in our Consolidated Balance Sheets. These securities represent the plan assets of our nonqualified deferred compensation plan (the “plan assets”). The plan assets are held in a rabbi trust. Each plan participant’s account is comprised of their contribution, our matching contribution (made prior to 2016) and each participant’s share of earnings or losses in the plan. We have recorded offsetting deferred compensation liabilities as a component of other noncurrent liabilities in our Consolidated Balance Sheets. The realized and unrealized holding gains and losses related to marketable securities are recorded in other income (expense) with an offsetting amount recorded in general and administrative expenses related to deferred compensation plan liabilities.
Deferred Financing Costs	Deferred Financing Costs. Costs related to the issuance of debt are deferred and amortized as a component of interest expense using the effective interest method over the terms of the respective debt issuances.
Self-insurance Liabilities	Self-insurance Liabilities. We record liabilities for insurance claims during periods in which we have been insured under large deductible programs or have been self-insured for our medical claims and workers’ compensation, general, product and automobile insurance liabilities. The liabilities for prior and current estimated incurred losses are discounted to their present value based on expected loss payment patterns determined by independent actuaries using our actual historical payments. These estimates include assumptions regarding claims frequency and severity as well as changes in our business environment, medical costs and the regulatory environment that could impact our overall self-insurance costs.
Income Taxes	Income Taxes. We account for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. All deferred taxes are reported as noncurrent in our Consolidated Balance Sheets. A valuation allowance reduces our net deferred tax asset to the amount that is more likely than not to be realized. We make certain estimates and judgments in the calculation of our provision for incomes taxes, in the resulting tax liabilities, and in the recoverability of deferred tax assets. We record a liability for unrecognized tax benefits resulting from more likely than not tax positions taken, or expected to be taken, in an income tax return. We recognize any interest and penalties related to unrecognized tax benefits in income tax expense. Assessment of uncertain tax positions requires judgments relating to the amounts, timing and likelihood of resolution.
Leases and Subleases, Lessee	Leases and Subleases. Effective December 27, 2018, the first day of fiscal 2019, we adopted Accounting Standards Update (“ASU”) 2016-02, “Leases (Topic 842)” and all subsequent ASUs that modified Topic 842. See the “Newly Adopted Accounting Standards” section of this Note 2 for further information on our adoption and Note 3 for further information about our transition to Topic 842 and the newly required disclosures. Lessee We lease certain real estate and equipment for our restaurants and support facilities. At contract inception, we determine whether a contract is, or contains, a lease by determining whether it conveys the right to control the use of the identified asset for a period of time. We recognize a lease liability and a right-of-use (“ROU”) asset at the lease commencement date. For operating leases, the lease liability is initially and subsequently measured at the present value of the unpaid lease payments at the lease commencement date. For finance leases, the lease liability is initially measured in the same manner and date as for operating leases, and is subsequently measured at amortized cost using the effective interest method. Operating lease ROU assets are initially and subsequently measured throughout the lease term at the carrying amount of the lease liability adjusted for initial direct costs, prepayments, accrued payments and lease incentives, if any. Lease cost is recognized on a straight-line basis over the lease term. Operating lease payments are classified as cash flows for operating activities with ROU asset amortization and the change in the lease liability combined as "Operating lease assets/liabilities" in the reconciliation of net income to net cash flows provided by operating activities in the Consolidated Statement of Cash Flows. Finance lease ROU assets are initially measured at cost and subsequently amortized on a straight-line basis over the lesser of the useful life or the lease term. Finance lease payments are classified as cash flows used in financing activities in the Consolidated Statement of Cash Flows. Operating and finance lease ROU assets are assessed for impairment using the long-lived assets impairment guidance. We use a consistent lease term for calculating the depreciation period for the related assets, classifying the lease and computing periodic rent expense where the lease terms include escalations in rent over the lease term. The new lease guidance provides practical expedients and accounting elections for our ongoing accounting after adoption. We elected the practical expedient to not separate nonlease components (such as common area maintenance) from lease components in regard to all leases and the portfolio approach in applying the discount rate to our leases. Key estimates and judgments include how we determine (1) lease payments, (2) lease term and (3) the discount rate used to discount the unpaid lease payments to present value. We have certain lease agreements structured with both a fixed base rent and a contingent rent based on a percentage of sales over contractual levels, others with only contingent rent based on a percentage of sales and some with a fixed base rent adjusted periodically for inflation or changes in the fair market rent rate. Contingent rent is recognized as sales occur. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants. The exercise of lease renewal options is at our sole discretion, except in certain sublease situations in which we have determined that it is reasonably certain that one or more options will be exercised, including where the exercise of a sublease option compels us to exercise the renewal option of the underlying master lease. Renewal option periods are included in the measurement of lease ROU asset and lease liability where the exercise is reasonably certain to occur. The discount rate used to determine the present value of the lease payments is our estimated collateralized incremental borrowing rate, based on the yield curve for the respective lease terms, as we generally cannot determine the interest rate implicit in the lease.
Leases and Subleases, Lessor	Lessor We lease or sublease certain restaurant properties to our franchisees and occasionally to third parties. The lease descriptions, terms, variable lease payments and renewal options are the same as the lessee leases described above. Contingent rental income is recognized when earned. Similar to our lessee accounting, we elected the lessor practical expedient to not separate nonlease components from lease components in regard to all leases.
Employee Benefit Plans	Employee Benefit Plans. Each year we measure and recognize the funded status of our defined benefit plans in our Consolidated Balance Sheets as of December 31. That date represents the month-end that is closest to our fiscal year-end. The funded status is adjusted for any contributions or significant events (such as a plan amendment, settlement, or curtailment that calls for a remeasurement) that occurs between our fiscal year-end and December 31.
Derivative Instruments	Derivative Instruments. We use derivative financial instruments to manage our exposure to interest rate risk. We do not enter into derivative instruments for trading or speculative purposes. All derivatives are recognized on our Consolidated Balance Sheets at fair value. Changes in the fair values of derivatives are recorded in earnings or other comprehensive income (“OCI”), based on whether the instrument is designated as a hedge transaction. Gains or losses on derivative instruments reported in OCI are classified to earnings in the period the hedged item affects earnings. If the underlying hedge transaction ceases to exist, any associated amounts reported in OCI are reclassified to earnings at that time. By entering into derivative instruments, we are exposed to counterparty credit risk. When the fair value of a derivative instrument is in an asset position, the counterparty has a liability to us, which creates credit risk for us. We manage our exposure to this risk by selecting counterparties with investment grade credit ratings and regularly monitoring our market position with each counterparty.
Contingencies and Litigation	Contingencies and Litigation. We are subject to legal proceedings involving ordinary and routine claims incidental to our business, as well as legal proceedings that are nonroutine and include compensatory or punitive damage claims. Our ultimate legal and financial liability with respect to such matters cannot be estimated with certainty and requires the use of estimates in recording liabilities for potential litigation settlements. When the reasonable estimate is a range, the recorded loss will be the best estimate within the range. We record legal settlement costs as other operating expenses in our Consolidated Statements of Income as those costs are incurred.
Comprehensive Income	Comprehensive Income. Comprehensive income includes net income and OCI items that are excluded from net income under U.S. generally accepted accounting principles. OCI items include additional minimum pension liability adjustments and the effective unrealized portion of changes in the fair value of cash flow hedges.
Segment	Segment. Denny’s operates in only one segment. All significant revenues and pre-tax earnings relate to retail sales of food and beverages to the general public through either company or franchised restaurants.
Revenues	Revenues. Effective December 28, 2017, the first day of fiscal 2018, we adopted ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)” and all subsequent ASUs that modified Topic 606. We elected to apply the modified retrospective method of adoption to those contracts which were not completed as of December 28, 2017. In doing so, we applied the practical expedient to aggregate all contract modifications that occurred before December 28, 2017 in determining the satisfied and unsatisfied performance obligations, the transaction price and the allocation of the transaction price to the satisfied and unsatisfied performance obligations. Results for reporting periods beginning after December 28, 2017 are presented under Topic 606. Prior period amounts are not adjusted and continue to be reported in accordance with our historical accounting under Accounting Standards Codification (“ASC”) 605 “Revenue Recognition (Topic 605)”. Company Restaurant Revenue. Company restaurant revenue is recognized at the point in time when food and beverage products are sold at company restaurants. We present company restaurant sales net of sales-related taxes collected from customers and remitted to governmental taxing authorities. Franchise Revenue. Franchise and license revenues consist primarily of royalties, advertising revenue, initial and other fees and occupancy revenue. Under franchise agreements we provide franchisees with a license of our brand’s symbolic intellectual property, administration of advertising programs (including local co-operatives), and other ongoing support functions. These services are highly interrelated so we do not consider them to be individually distinct performance obligations, and therefore account for them as a single performance obligation. Revenue from franchise agreements is recognized evenly over the term of the agreement with the exception of sales-based royalties. Royalty and advertising revenues represent sales-based royalties that are recognized in the period in which the sales occur. Sales-based royalties are variable consideration related to our performance obligation to our franchisees to maintain the intellectual property being licensed. Under our franchise agreements, franchisee advertising contributions must be spent on marketing and related activities. Upon adoption of Topic 606, advertising revenues and expenditures are recorded on a gross basis within the Consolidated Statements of Income. Under the previous guidance of Topic 605, we recorded franchise advertising expense net of contributions from franchisees to our advertising programs, including local co-operatives. While this change materially impacts the gross amount of reported franchise and license revenue and costs of franchise and license revenue, the impact is generally an offsetting increase to both revenue and expense with little, if any, impact on operating income and net income. Initial and other fees consist of initial, successor and assignment franchise fees (“initial franchise fees”). Initial franchise fees are billed and received upon the signing of the franchise agreement. Under Topic 606, recognition of these fees is deferred until the commencement date of the agreement and occurs over time based on the term of the underlying franchise agreement. In the event a franchise agreement is terminated, any remaining deferred fees are recognized in the period of termination. Under the previous guidance, initial franchise fees were recognized upon the opening of a franchised restaurant. Initial and other fees also include revenue that are distinct from the franchise agreement and are separate performance obligations. Training and other franchise services fees are billed and recognized at a point in time as services are rendered. Similar to advertising revenue, upon adoption of Topic 606, other franchise services fees are recorded on a gross basis within the Consolidated Statements of Income, whereas, under previous guidance, they were netted against the related expenses. Occupancy revenue results from leasing or subleasing restaurants to franchisees and is recognized over the term of the lease agreement. With the exception of initial and other franchise fees, revenues are typically billed and collected on a weekly basis. Gift cards. We sell gift cards which have no stated expiration dates in our company restaurants, franchised restaurants and at certain third party retailers. We recognize revenue when a gift card is redeemed in one of our company restaurants. We maintain a gift card liability for cards sold in our company restaurants and for cards sold by third parties. Upon adoption of Topic 606, gift card breakage is recognized proportionally as redemptions occur. Our gift card breakage primarily relates to cards sold by third parties and is recorded as advertising revenue (included as a component of franchise and license revenue). Under previous guidance, we recorded gift card breakage when the likelihood of redemption was remote. Breakage was recorded as a benefit to our advertising fund or reduction to other operating expenses, depending on where the gift cards were sold.
Advertising Costs	Advertising Costs. We expense production costs for radio and television advertising in the year in which the commercials are initially aired.
Restructuring and Exit Costs	Restructuring and Exit Costs. Restructuring and exit costs are included as a component of operating (gains), losses and other charges, net in our Consolidated Statements of Income. Restructuring costs consist primarily of severance and other restructuring charges for terminated employees. Prior to the adoption of Topic 842, exit costs consisted primarily of the costs of future obligations related to closed restaurants. Discounted liabilities for future lease costs and the fair value of related subleases of closed restaurants were recorded when the restaurants were closed. All other costs related to closed restaurants were expensed as incurred. As a result of the adoption of Topic 842, exit cost liabilities related to operating lease costs are now included as a component of operating lease liabilities in our Consolidated Balance Sheets. Amounts recorded as exit costs include period costs related to closed units.
Disposal or Impairment of Long-lived Assets	Disposal or Impairment of Long-lived Assets. We evaluate our long-lived assets for impairment at the restaurant level on a quarterly basis, when assets are identified as held for sale or whenever changes or events indicate that the carrying value may not be recoverable. For assets identified as held for sale, we use the market approach and consider proceeds from similar asset sales. We assess impairment of restaurant-level assets based on the operating cash flows of the restaurant, expected proceeds from the sale of assets and our plans for restaurant closings. Generally, all restaurants with negative cash flows from operations for the most recent twelve months at each quarter end are included in our assessment. For underperforming assets, we use the income approach to determine both the recoverability and estimated fair value of the assets. To estimate future cash flows, we make certain assumptions about expected future operating performance, such as revenue growth, operating margins, risk-adjusted discount rates, and future economic and market conditions. If the long-lived assets of a restaurant are not recoverable based upon estimated future, undiscounted cash flows, we write the assets down to their fair value. If these estimates or their related assumptions change in the future, we may be required to record additional impairment charges. These charges are included as a component of operating (gains), losses and other charges, net in our Consolidated Statements of Income. Assets held for sale consist of real estate properties and/or restaurant operations that we expect to sell within the next year. The assets are reported at the lower of carrying amount or fair value less costs to sell. We cease recording depreciation on assets that are classified as held for sale. If the determination is made that we no longer expect to sell an asset within the next year, the asset is reclassified out of held for sale.
Discontinued Operations	Discontinued Operations. We evaluate restaurant closures and assets reclassified to assets held for sale for potential disclosure as discontinued operations. Only disposals resulting in a strategic shift that will have a major effect on our operations and financial results are reported as discontinued operations. There were no such disposals, nor any disposals of individually significant components. The gains and losses related to restaurant closures and assets reclassified to assets held for sale are included as a component of operating (gain), losses and other charges, net in our Consolidated Statements of Income.
Gains and Losses on Sales of Restaurants Operations to Franchisees, Real Estate and Other Assets	Gains and Losses on Sales of Restaurants Operations to Franchisees, Real Estate and Other Assets. Generally, gains and losses on sales of restaurant operations to franchisees (which may include real estate), real estate properties and other assets are recognized when the sales are consummated and certain other gain recognition criteria are met. Total gains and losses are included as a component of operating (gains), losses and other charges, net in our Consolidated Statements of Income.
Share-based Compensation	Also in accordance with ASU 2016-09, starting in 2017, excess tax benefits recognized related to share-based compensation are included as a component of provision for income taxes in our Consolidated Statements of Income and are classified as operating activities in our Consolidated Statements of Cash Flows.Share-based Compensation. Share-based compensation cost is measured at the grant date, based on the fair value of the award, and is recognized as an expense over the requisite service period. Share-based compensation expense is included as a component of general and administrative expenses in our Consolidated Statements of Income. Starting in fiscal 2017, in accordance with the adoption of Accounting Standards Update (“ASU”) 2016-09, we elected to account for forfeitures as they occur. Previously, we estimated potential forfeitures of share-based awards and adjusted the forfeiture rate over the requisite service period to the extent that actual forfeitures differed from such estimates. Generally, compensation expense related to performance share units and restricted stock units for board members is based on the number of units expected to vest, the period over which they are expected to vest and the fair market value of our common stock on the date of the grant. For restricted stock units and performance share units that contain a market condition, compensation expense is based on the Monte Carlo valuation method, which utilizes multiple input variables to determine the probability of the Company achieving the market condition and the fair value of the award. The key assumptions used include expected volatility and risk-free interest rates over the term of the award. Subsequent to the vesting period, earned stock-settled restricted stock units and performance share units (both of which are equity classified) are paid to the holder in shares of our common stock, provided the holder was still employed with Denny’s or an affiliate as of the vesting date.
Earnings Per Share	Earnings Per Share. Basic earnings per share is calculated by dividing net income by the weighted average number of common shares outstanding during the period. Diluted earnings per share is calculated by dividing net income by the weighted average number of common shares and potential common shares outstanding during the period.
Reclassifications	Reclassifications. We have reclassified certain prior year amounts to conform to the current year presentation. These reclassifications have not changed the results of operations of prior periods.
Newly Adopted Accounting Standards and Accounting Standards to be Adopted	Newly Adopted Accounting Standards Effective December 27, 2018, the first day of fiscal 2019, we adopted ASU Topic 842 and all subsequent ASUs that modified Topic 842. The new guidance established a ROU model that requires lessees to recognize a ROU asset and a lease liability for all leases with terms greater than 12 months. Lessees classify leases as financing or operating. The guidance requires lessors to classify leases as sales-type, direct financing or operating. We elected to apply the modified retrospective transition approach as the date of initial application without restating comparative period financial statements. Results for reporting periods beginning after December 26, 2018 are presented under Topic 842. Prior period amounts are not adjusted and continue to be reported in accordance with our historical accounting under ASC 840, “Leases (Topic 840)”. Our transition to Topic 842 represents a change in accounting principle. The new guidance provided a number of optional practical expedients in transition. We elected the package of practical expedients that permitted us not to reassess our prior conclusions regarding lease identification, lease classification or initial direct costs. In addition, we did not elect the practical expedient which would have permitted us to use hindsight in evaluating our leases, nor did we elect the land easement practical expedient. In preparation for adoption, we implemented a new lease management system. Upon adoption of Topic 842, we recorded operating lease liabilities of $101.3 million and ROU assets of $94.2 million related to existing operating leases. In addition, we recorded a cumulative effect adjustment increasing opening deficit by $0.4 million and deferred tax assets by $0.1 million. The lease liabilities were based on the present value of remaining rental payments under previous leasing standards for existing operating leases primarily related to real estate leases. Exit cost and straight-line lease liabilities that existed at the adoption date were reclassified against the ROU assets upon adoption. The amount recorded to opening deficit represents the initial impairment of ROU assets, net of the deferred tax impact. See Note 3 for further information about our transition to Topic 842 and the required disclosures. Additional new accounting guidance became effective for us as of December 27, 2018 that we reviewed and concluded was either not applicable to our operations or had no material effect on our Consolidated Financial Statements and related disclosures. Accounting Standards to be Adopted In June 2016, the FASB issued ASU 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” The new guidance replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform financial statement users of credit loss estimates. ASU 2016-13 is effective for annual and interim periods beginning after December 15, 2019 (our fiscal 2020) with early adoption permitted for annual and interim periods beginning after December 15, 2018 (our fiscal 2019). We do not expect the adoption of this guidance to have a material impact on our Consolidated Financial Statements. We reviewed all other newly issued accounting pronouncements and concluded that they are either not applicable to our business or are not expected to have a material effect on our Consolidated Financial Statements as a result of future adoption.

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 25, 2019

Use of Estimates. In preparing our Consolidated Financial Statements in conformity with U.S. generally accepted accounting principles, management is required to make certain assumptions and estimates that affect reported amounts of assets, liabilities, revenues, expenses and the disclosure of contingencies. In making these assumptions and estimates, management may from time to time seek advice and consider information provided by actuaries and other experts in a particular area. Actual amounts could differ materially from these estimates.

Consolidation Policy

Consolidation Policy. Our Consolidated Financial Statements include the financial statements of Denny’s Corporation and its wholly-owned subsidiaries: Denny’s, Inc., DFO, LLC, Denny’s Realty, LLC and East Main Insurance Company. All significant intercompany balances and transactions have been eliminated in consolidation.

Fiscal Year

Fiscal Year. Our fiscal year ends on the last Wednesday in December. As a result, a fifty-third week is added to a fiscal year every five or six years.

Cash and Cash Equivalents

Cash and Cash Equivalents. Our policy is to invest cash in excess of operating requirements in short-term highly liquid investments with an original maturity of three months or less, which we consider to be cash equivalents.

Receivables

Receivables. Receivables, which are recorded at net realizable value, primarily consist of trade accounts receivables and financing receivables from franchisees, vendor receivables and credit card receivables. Trade accounts receivables from franchisees consist of royalties, advertising and rent. Financing receivables from franchisees primarily consist of notes from franchisees related to the roll-out of equipment. We accrue interest on notes receivable based on the contractual terms. The allowance for doubtful accounts is based on pre-defined criteria and management’s judgment of existing receivables. Receivables that are ultimately deemed to be uncollectible, and for which collection efforts have been exhausted, are written off against the allowance for doubtful accounts.

Inventories

Inventories. Inventories consist of food and beverages and are valued at the lower of cost and net realizable value.

Property and Depreciation

Property and Depreciation. Owned property is stated at cost. Property under finance leases are stated at the lesser of its fair value or the net present value of the related minimum lease payments at the lease inception. Maintenance and repairs are expensed as incurred. We depreciate owned property over its estimated useful life using the straight-line method. We amortize property held under finance leases (at capitalized value) over the lesser of its estimated useful life or the lease term. Building assets are assigned estimated useful lives that range from five to 30 years. Equipment assets are assigned lives that range from two to ten years. Leasehold improvements are generally assigned lives between five and 15 years limited by the expected lease term.

Goodwill

Goodwill. Amounts recorded as goodwill primarily represent excess reorganization value recognized as a result of our 1998 bankruptcy. We also record goodwill in connection with the acquisition of restaurants from franchisees. Likewise, upon the sale of restaurant operations to franchisees, goodwill is decremented. We test goodwill for impairment at each fiscal year end and more frequently if circumstances indicate impairment may exist. Such indicators include, but are not limited to, a significant decline in our expected future cash flows, a significant adverse decline in our stock price, significantly adverse legal developments and a significant change in the business climate.

Intangible Assets

Intangible Assets. Intangible assets consist primarily of trade names and reacquired franchise rights. Trade names are considered indefinite-lived intangible assets and are not amortized. Reacquired franchise rights are amortized using the straight-line basis over the term of the related franchise agreement. Reacquired franchise rights resulting from acquisitions are accounted for using the purchase method of accounting and are estimated by management based on the fair value of the assets received.

We test trade name assets for impairment at each fiscal year end, and more frequently if circumstances indicate impairment may exist. We assess impairment of reacquired franchise rights whenever changes or events indicate that the carrying value may not be recoverable. Costs incurred to renew or extend the term of recognized intangible assets are recorded in general and administrative expenses in our Consolidated Statements of Income.

Marketable Securities

Marketable Securities. Marketable securities included in investments consist of available for sale equity instruments and are recorded at fair market value in our Consolidated Balance Sheets.

Marketable securities included in other noncurrent assets consist of trading debt and equity mutual funds and are recorded at fair market value in our Consolidated Balance Sheets. These securities represent the plan assets of our nonqualified deferred compensation plan (the “plan assets”). The plan assets are held in a rabbi trust. Each plan participant’s account is comprised of their contribution, our matching contribution (made prior to 2016) and each participant’s share of earnings or losses in the plan. We have recorded offsetting deferred compensation liabilities as a component of other noncurrent liabilities in our Consolidated Balance Sheets.

The realized and unrealized holding gains and losses related to marketable securities are recorded in other income (expense) with an offsetting amount recorded in general and administrative expenses related to deferred compensation plan liabilities.

Deferred Financing Costs

Deferred Financing Costs. Costs related to the issuance of debt are deferred and amortized as a component of interest expense using the effective interest method over the terms of the respective debt issuances.

Self-insurance Liabilities

Self-insurance Liabilities. We record liabilities for insurance claims during periods in which we have been insured under large deductible programs or have been self-insured for our medical claims and workers’ compensation, general, product and

automobile insurance liabilities. The liabilities for prior and current estimated incurred losses are discounted to their present value based on expected loss payment patterns determined by independent actuaries using our actual historical payments. These estimates include assumptions regarding claims frequency and severity as well as changes in our business environment, medical costs and the regulatory environment that could impact our overall self-insurance costs.

Income Taxes

Income Taxes. We account for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. All deferred taxes are reported as noncurrent in our Consolidated Balance Sheets. A valuation allowance reduces our net deferred tax asset to the amount that is more likely than not to be realized. We make certain estimates and judgments in the calculation of our provision for incomes taxes, in the resulting tax liabilities, and in the recoverability of deferred tax assets.

We record a liability for unrecognized tax benefits resulting from more likely than not tax positions taken, or expected to be taken, in an income tax return. We recognize any interest and penalties related to unrecognized tax benefits in income tax expense. Assessment of uncertain tax positions requires judgments relating to the amounts, timing and likelihood of resolution.

Leases and Subleases, Lessee

Leases and Subleases. Effective December 27, 2018, the first day of fiscal 2019, we adopted Accounting Standards Update (“ASU”) 2016-02, “Leases (Topic 842)” and all subsequent ASUs that modified Topic 842. See the “Newly Adopted Accounting Standards” section of this Note 2 for further information on our adoption and Note 3 for further information about our transition to Topic 842 and the newly required disclosures.

Lessee

We lease certain real estate and equipment for our restaurants and support facilities. At contract inception, we determine whether a contract is, or contains, a lease by determining whether it conveys the right to control the use of the identified asset for a period of time. We recognize a lease liability and a right-of-use (“ROU”) asset at the lease commencement date.

For operating leases, the lease liability is initially and subsequently measured at the present value of the unpaid lease payments at the lease commencement date. For finance leases, the lease liability is initially measured in the same manner and date as for operating leases, and is subsequently measured at amortized cost using the effective interest method.

Operating lease ROU assets are initially and subsequently measured throughout the lease term at the carrying amount of the lease liability adjusted for initial direct costs, prepayments, accrued payments and lease incentives, if any. Lease cost is recognized on a straight-line basis over the lease term. Operating lease payments are classified as cash flows for operating activities with ROU asset amortization and the change in the lease liability combined as "Operating lease assets/liabilities" in the reconciliation of net income to net cash flows provided by operating activities in the Consolidated Statement of Cash Flows. Finance lease ROU assets are initially measured at cost and subsequently amortized on a straight-line basis over the lesser of the useful life or the lease term. Finance lease payments are classified as cash flows used in financing activities in the Consolidated Statement of Cash Flows. Operating and finance lease ROU assets are assessed for impairment using the long-lived assets impairment guidance.

We use a consistent lease term for calculating the depreciation period for the related assets, classifying the lease and computing periodic rent expense where the lease terms include escalations in rent over the lease term.

The new lease guidance provides practical expedients and accounting elections for our ongoing accounting after adoption. We elected the practical expedient to not separate nonlease components (such as common area maintenance) from lease components in regard to all leases and the portfolio approach in applying the discount rate to our leases.

Key estimates and judgments include how we determine (1) lease payments, (2) lease term and (3) the discount rate used to discount the unpaid lease payments to present value.

We have certain lease agreements structured with both a fixed base rent and a contingent rent based on a percentage of sales over contractual levels, others with only contingent rent based on a percentage of sales and some with a fixed base rent adjusted periodically for inflation or changes in the fair market rent rate. Contingent rent is recognized as sales occur. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants.

The exercise of lease renewal options is at our sole discretion, except in certain sublease situations in which we have determined that it is reasonably certain that one or more options will be exercised, including where the exercise of a sublease option compels us to exercise the renewal option of the underlying master lease. Renewal option periods are included in the measurement of lease ROU asset and lease liability where the exercise is reasonably certain to occur.

The discount rate used to determine the present value of the lease payments is our estimated collateralized incremental borrowing rate, based on the yield curve for the respective lease terms, as we generally cannot determine the interest rate implicit in the lease.

Leases and Subleases, Lessor

Lessor

We lease or sublease certain restaurant properties to our franchisees and occasionally to third parties. The lease descriptions, terms, variable lease payments and renewal options are the same as the lessee leases described above. Contingent rental income is recognized when earned. Similar to our lessee accounting, we elected the lessor practical expedient to not separate nonlease components from lease components in regard to all leases.

Employee Benefit Plans

Employee Benefit Plans. Each year we measure and recognize the funded status of our defined benefit plans in our Consolidated Balance Sheets as of December 31. That date represents the month-end that is closest to our fiscal year-end. The funded status is adjusted for any contributions or significant events (such as a plan amendment, settlement, or curtailment that calls for a remeasurement) that occurs between our fiscal year-end and December 31.

Derivative Instruments

Derivative Instruments. We use derivative financial instruments to manage our exposure to interest rate risk. We do not enter into derivative instruments for trading or speculative purposes. All derivatives are recognized on our Consolidated Balance Sheets at fair value. Changes in the fair values of derivatives are recorded in earnings or other comprehensive income (“OCI”), based on whether the instrument is designated as a hedge transaction. Gains or losses on derivative instruments reported in OCI are classified to earnings in the period the hedged item affects earnings. If the underlying hedge transaction ceases to exist, any associated amounts reported in OCI are reclassified to earnings at that time. By entering into derivative instruments, we are exposed to counterparty credit risk. When the fair value of a derivative instrument is in an asset position, the counterparty has a liability to us, which creates credit risk for us. We manage our exposure to this risk by selecting counterparties with investment grade credit ratings and regularly monitoring our market position with each counterparty.

Contingencies and Litigation

Contingencies and Litigation. We are subject to legal proceedings involving ordinary and routine claims incidental to our business, as well as legal proceedings that are nonroutine and include compensatory or punitive damage claims. Our ultimate legal and financial liability with respect to such matters cannot be estimated with certainty and requires the use of estimates in recording liabilities for potential litigation settlements. When the reasonable estimate is a range, the recorded loss will be the best estimate within the range. We record legal settlement costs as other operating expenses in our Consolidated Statements of Income as those costs are incurred.

Comprehensive Income

Comprehensive Income. Comprehensive income includes net income and OCI items that are excluded from net income under U.S. generally accepted accounting principles. OCI items include additional minimum pension liability adjustments and the effective unrealized portion of changes in the fair value of cash flow hedges.

Segment

Segment. Denny’s operates in only one segment. All significant revenues and pre-tax earnings relate to retail sales of food and beverages to the general public through either company or franchised restaurants.

Revenues

Revenues. Effective December 28, 2017, the first day of fiscal 2018, we adopted ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)” and all subsequent ASUs that modified Topic 606. We elected to apply the modified retrospective method of adoption to those contracts which were not completed as of December 28, 2017. In doing so, we applied the practical expedient to aggregate all contract modifications that occurred before December 28, 2017 in determining the satisfied and unsatisfied performance obligations, the transaction price and the allocation of the transaction price to the satisfied and unsatisfied performance obligations. Results for reporting periods beginning after December 28, 2017 are presented under Topic 606. Prior period amounts are not adjusted and continue to be reported in accordance with our historical accounting under Accounting Standards Codification (“ASC”) 605 “Revenue Recognition (Topic 605)”.

Company Restaurant Revenue. Company restaurant revenue is recognized at the point in time when food and beverage products are sold at company restaurants. We present company restaurant sales net of sales-related taxes collected from customers and remitted to governmental taxing authorities.

Franchise Revenue. Franchise and license revenues consist primarily of royalties, advertising revenue, initial and other fees and occupancy revenue.

Under franchise agreements we provide franchisees with a license of our brand’s symbolic intellectual property, administration of advertising programs (including local co-operatives), and other ongoing support functions. These services are highly interrelated so we do not consider them to be individually distinct performance obligations, and therefore account for them as a single performance obligation. Revenue from franchise agreements is recognized evenly over the term of the agreement with the exception of sales-based royalties.

Royalty and advertising revenues represent sales-based royalties that are recognized in the period in which the sales occur. Sales-based royalties are variable consideration related to our performance obligation to our franchisees to maintain the intellectual property being licensed. Under our franchise agreements, franchisee advertising contributions must be spent on marketing and related activities. Upon adoption of Topic 606, advertising revenues and expenditures are recorded on a gross basis within the Consolidated Statements of Income. Under the previous guidance of Topic 605, we recorded franchise advertising expense net of contributions from franchisees to our advertising programs, including local co-operatives. While this change materially impacts the gross amount of reported franchise and license revenue and costs of franchise and license revenue, the impact is generally an offsetting increase to both revenue and expense with little, if any, impact on operating income and net income.

Initial and other fees consist of initial, successor and assignment franchise fees (“initial franchise fees”). Initial franchise fees are billed and received upon the signing of the franchise agreement. Under Topic 606, recognition of these fees is deferred until the commencement date of the agreement and occurs over time based on the term of the underlying franchise agreement. In the event a franchise agreement is terminated, any remaining deferred fees are recognized in the period of termination. Under the previous guidance, initial franchise fees were recognized upon the opening of a franchised restaurant.

Initial and other fees also include revenue that are distinct from the franchise agreement and are separate performance obligations. Training and other franchise services fees are billed and recognized at a point in time as services are rendered. Similar to advertising revenue, upon adoption of Topic 606, other franchise services fees are recorded on a gross basis within the Consolidated Statements of Income, whereas, under previous guidance, they were netted against the related expenses.

Occupancy revenue results from leasing or subleasing restaurants to franchisees and is recognized over the term of the lease agreement.

With the exception of initial and other franchise fees, revenues are typically billed and collected on a weekly basis.

Gift cards. We sell gift cards which have no stated expiration dates in our company restaurants, franchised restaurants and at certain third party retailers. We recognize revenue when a gift card is redeemed in one of our company restaurants. We maintain a gift card liability for cards sold in our company restaurants and for cards sold by third parties. Upon adoption of Topic 606, gift card breakage is recognized proportionally as redemptions occur. Our gift card breakage primarily relates to cards sold by third parties and is recorded as advertising revenue (included as a component of franchise and license revenue). Under previous guidance, we recorded gift card breakage when the likelihood of redemption was remote. Breakage was recorded as a benefit to our advertising fund or reduction to other operating expenses, depending on where the gift cards were sold.

Advertising Costs

Advertising Costs. We expense production costs for radio and television advertising in the year in which the commercials are initially aired.

Restructuring and Exit Costs

Restructuring and Exit Costs. Restructuring and exit costs are included as a component of operating (gains), losses and other charges, net in our Consolidated Statements of Income. Restructuring costs consist primarily of severance and other restructuring charges for terminated employees.

Prior to the adoption of Topic 842, exit costs consisted primarily of the costs of future obligations related to closed restaurants. Discounted liabilities for future lease costs and the fair value of related subleases of closed restaurants were recorded when the restaurants were closed. All other costs related to closed restaurants were expensed as incurred. As a result of the adoption of Topic 842, exit cost liabilities related to operating lease costs are now included as a component of operating lease liabilities in our Consolidated Balance Sheets. Amounts recorded as exit costs include period costs related to closed units.

Disposal or Impairment of Long-lived Assets

Disposal or Impairment of Long-lived Assets. We evaluate our long-lived assets for impairment at the restaurant level on a quarterly basis, when assets are identified as held for sale or whenever changes or events indicate that the carrying value may not be recoverable. For assets identified as held for sale, we use the market approach and consider proceeds from similar asset sales. We assess impairment of restaurant-level assets based on the operating cash flows of the restaurant, expected proceeds from the sale of assets and our plans for restaurant closings. Generally, all restaurants with negative cash flows from operations for the most recent twelve months at each quarter end are included in our assessment. For underperforming assets, we use the income approach to determine both the recoverability and estimated fair value of the assets. To estimate future cash flows, we make certain assumptions about expected future operating performance, such as revenue growth, operating margins, risk-adjusted discount rates, and future economic and market conditions. If the long-lived assets of a restaurant are not recoverable based upon estimated future, undiscounted cash flows, we write the assets down to their fair value. If these estimates or their related assumptions change in the future, we may be required to record additional impairment charges. These charges are included as a component of operating (gains), losses and other charges, net in our Consolidated Statements of Income.

Assets held for sale consist of real estate properties and/or restaurant operations that we expect to sell within the next year. The assets are reported at the lower of carrying amount or fair value less costs to sell. We cease recording depreciation on assets that are classified as held for sale. If the determination is made that we no longer expect to sell an asset within the next year, the asset is reclassified out of held for sale.

Discontinued Operations

Discontinued Operations. We evaluate restaurant closures and assets reclassified to assets held for sale for potential disclosure as discontinued operations. Only disposals resulting in a strategic shift that will have a major effect on our operations and financial results are reported as discontinued operations. There were no such disposals, nor any disposals of individually significant components. The gains and losses related to restaurant closures and assets reclassified to assets held for sale are included as a component of operating (gain), losses and other charges, net in our Consolidated Statements of Income.

Gains and Losses on Sales of Restaurants Operations to Franchisees, Real Estate and Other Assets

Gains and Losses on Sales of Restaurants Operations to Franchisees, Real Estate and Other Assets. Generally, gains and losses on sales of restaurant operations to franchisees (which may include real estate), real estate properties and other assets are recognized when the sales are consummated and certain other gain recognition criteria are met. Total gains and losses are included as a component of operating (gains), losses and other charges, net in our Consolidated Statements of Income.

Share-based Compensation

Also in accordance with ASU 2016-09, starting in 2017, excess tax benefits recognized related to share-based compensation are included as a component of provision for income taxes in our Consolidated Statements of Income and are classified as operating activities in our Consolidated Statements of Cash Flows.Share-based Compensation. Share-based compensation cost is measured at the grant date, based on the fair value of the award, and is recognized as an expense over the requisite service period. Share-based compensation expense is included as a component of general and administrative expenses in our Consolidated Statements of Income. Starting in fiscal 2017, in accordance with the adoption of Accounting Standards Update (“ASU”) 2016-09, we elected to account for forfeitures as they occur. Previously, we estimated potential forfeitures of share-based awards and adjusted the forfeiture rate over the requisite service period to the extent that actual forfeitures differed from such estimates.

Generally, compensation expense related to performance share units and restricted stock units for board members is based on the number of units expected to vest, the period over which they are expected to vest and the fair market value of our common stock on the date of the grant. For restricted stock units and performance share units that contain a market condition, compensation expense is based on the Monte Carlo valuation method, which utilizes multiple input variables to determine the probability of the Company achieving the market condition and the fair value of the award. The key assumptions used include expected volatility and risk-free interest rates over the term of the award.

Subsequent to the vesting period, earned stock-settled restricted stock units and performance share units (both of which are equity classified) are paid to the holder in shares of our common stock, provided the holder was still employed with Denny’s or an affiliate as of the vesting date.

Earnings Per Share

Earnings Per Share. Basic earnings per share is calculated by dividing net income by the weighted average number of common shares outstanding during the period. Diluted earnings per share is calculated by dividing net income by the weighted average number of common shares and potential common shares outstanding during the period.

Reclassifications

Reclassifications. We have reclassified certain prior year amounts to conform to the current year presentation. These reclassifications have not changed the results of operations of prior periods.

Newly Adopted Accounting Standards and Accounting Standards to be Adopted

Newly Adopted Accounting Standards

Effective December 27, 2018, the first day of fiscal 2019, we adopted ASU Topic 842 and all subsequent ASUs that modified Topic 842. The new guidance established a ROU model that requires lessees to recognize a ROU asset and a lease liability for all leases with terms greater than 12 months. Lessees classify leases as financing or operating. The guidance requires lessors to classify leases as sales-type, direct financing or operating. We elected to apply the modified retrospective transition approach as the date of initial application without restating comparative period financial statements. Results for reporting periods beginning after December 26, 2018 are presented under Topic 842. Prior period amounts are not adjusted and continue to be reported in accordance with our historical accounting under ASC 840, “Leases (Topic 840)”. Our transition to Topic 842 represents a change in accounting principle.

The new guidance provided a number of optional practical expedients in transition. We elected the package of practical expedients that permitted us not to reassess our prior conclusions regarding lease identification, lease classification or initial direct costs. In addition, we did not elect the practical expedient which would have permitted us to use hindsight in evaluating our leases, nor did we elect the land easement practical expedient. In preparation for adoption, we implemented a new lease management system.

Upon adoption of Topic 842, we recorded operating lease liabilities of $101.3 million and ROU assets of $94.2 million related to existing operating leases. In addition, we recorded a cumulative effect adjustment increasing opening deficit by $0.4 million and deferred tax assets by $0.1 million. The lease liabilities were based on the present value of remaining rental payments under previous leasing standards for existing operating leases primarily related to real estate leases. Exit cost and straight-line lease liabilities that existed at the adoption date were reclassified against the ROU assets upon adoption. The amount recorded to opening deficit represents the initial impairment of ROU assets, net of the deferred tax impact.

See Note 3 for further information about our transition to Topic 842 and the required disclosures.

Additional new accounting guidance became effective for us as of December 27, 2018 that we reviewed and concluded was either not applicable to our operations or had no material effect on our Consolidated Financial Statements and related disclosures.

Accounting Standards to be Adopted

In June 2016, the FASB issued ASU 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” The new guidance replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform financial statement users of credit loss estimates. ASU 2016-13 is effective for annual and interim periods beginning after December 15, 2019 (our fiscal 2020) with early adoption permitted for annual and interim periods beginning after December 15, 2018 (our fiscal 2019). We do not expect the adoption of this guidance to have a material impact on our Consolidated Financial Statements.

We reviewed all other newly issued accounting pronouncements and concluded that they are either not applicable to our business or are not expected to have a material effect on our Consolidated Financial Statements as a result of future adoption.