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v2.4.1.9

Long-Term Debt (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 25, 2013
Line of Credit Facility [Line Items] |  |
Weighted-average interest rate (in hundredths) | 2.17%us-gaap_LongtermDebtWeightedAverageInterestRate | 2.17%us-gaap_LongtermDebtWeightedAverageInterestRate
Maturity date | Apr. 24, 2018 |
Interest Rate Cap [Member] | Interest Rate Cap 2013-2014 [Member] |  |
Line of Credit Facility [Line Items] |  |
Derivative, notional amount | 125,000,000 invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = denn_InterestRateCap20132014Member / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateCapMember |
Interest rate cap, basis spread on variable rate (percent) | 2.00%us-gaap_DerivativeBasisSpreadOnVariableRate / us-gaap_DerivativeByNatureAxis = denn_InterestRateCap20132014Member / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateCapMember |
Interest Rate Cap [Member] | Interest Rate Cap 2014-2015 [Member] |  |
Line of Credit Facility [Line Items] |  |
Derivative, notional amount | 150,000,000 invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = denn_InterestRateCap20142015Member / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateCapMember |
Interest rate cap, basis spread on variable rate (percent) | 2.00%us-gaap_DerivativeBasisSpreadOnVariableRate / us-gaap_DerivativeByNatureAxis = denn_InterestRateCap20142015Member / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateCapMember |
Interest Rate Swap [Member] |  |
Line of Credit Facility [Line Items] |  |
Average fixed interest rate on interest rate swap | 3.13%us-gaap_DerivativeAverageFixedInterestRate / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |
Fair value of interest rate swap | 642,000 us-gaap_DerivativeAssets / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] |  |
Line of Credit Facility [Line Items] |  |
Derivative, notional amount | 30,000,000 invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember |
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] |  |
Line of Credit Facility [Line Items] |  |
Derivative, notional amount | 120,000,000 invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember |
Secured debt [Member] |  |
Line of Credit Facility [Line Items] |  |
Line of credit facility, maximum borrowing capacity | 60,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = us-gaap_SecuredDebtMember |
Outstanding amount under credit facility | 54,800,000 us-gaap_LineOfCredit / us-gaap_DebtInstrumentAxis = us-gaap_SecuredDebtMember |
Debt Instrument, Periodic Amortization, Principal, Years One and Two | 5.00%denn_DebtInstrumentPeriodicAmortizationPrincipalYearsOneAndTwo / us-gaap_DebtInstrumentAxis = us-gaap_SecuredDebtMember |
Debt Instrument, Periodic Amortization, Principal, Years Three and Four | 7.50%denn_DebtInstrumentPeriodicAmortizationPrincipalYearsThreeAndFour / us-gaap_DebtInstrumentAxis = us-gaap_SecuredDebtMember |
Debt Instrument, Periodic Amortization, Principal, Year Five | 10.00%denn_DebtInstrumentPeriodicAmortizationPrincipalYearFive / us-gaap_DebtInstrumentAxis = us-gaap_SecuredDebtMember |
Repayments of term loan under the credit facility | 3,000,000 us-gaap_RepaymentsOfSeniorDebt / us-gaap_DebtInstrumentAxis = us-gaap_SecuredDebtMember |
Basis spread on variable rate (in hundredths) | 2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = us-gaap_SecuredDebtMember |
Senior secured revolver [Member] |  |
Line of Credit Facility [Line Items] |  |
Line of credit facility, maximum borrowing capacity | 190,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |
Outstanding amount under credit facility | 85,300,000 us-gaap_LineOfCredit / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |
Availability under the revolving facility | 79,000,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |
Accordion feature that allows increase in size of facility | 240,000,000 denn_AccordionFeatureThatAllowsIncreaseInSizeOfFacility / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |
Commitment fee for unused portion of revolving credit facility (in hundredths) | 0.35%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |
Letter of credit [Member] |  |
Line of Credit Facility [Line Items] |  |
Line of credit facility, maximum borrowing capacity | 30,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = us-gaap_LetterOfCreditMember |
Outstanding amount under letter of credit | 25,700,000 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_DebtInstrumentAxis = us-gaap_LetterOfCreditMember |

X
- Definition Represents the amount the accordion feature allows the entity to increase the size of the credit facility to. + References No definition available. + Details
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X
- Definition Annual amortization percentage of the original principal balance of term loan debt required to be paid in year five. + References No definition available. + Details
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- Definition Annual amortization percentage of the original principal balance of term loan debt required to be paid in years one and two. + References No definition available. + Details
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- Definition Annual amortization percentage of the original principal balance of term loan debt required to be paid in years three and four. + References No definition available. + Details
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313 + Details
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- Definition Average fixed interest rate related to the group of interest rate derivatives. + References No definition available. + Details
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- Definition The percentage points added to the reference rate to compute the variable rate on the interest rate derivative. + References No definition available. + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Definition Weighted average interest rate of long-term debt outstanding. + References No definition available. + Details
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- Definition The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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