XML 100 R82.htm IDEA: XBRL DOCUMENT v2.4.1.9

Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 25, 2013
Guarantor Obligations [Line Items]
Liabilities included as a component of other noncurrent liabilities and deferred credits	$ 0.1us-gaap_GuaranteeObligationsCurrentCarryingValue	$ 0.1us-gaap_GuaranteeObligationsCurrentCarryingValue
Property Lease Guarantee [Member]
Guarantor Obligations [Line Items]
Maximum payments guaranteed	2.0us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_PropertyLeaseGuaranteeMember
Financial Guarantee [Member]
Guarantor Obligations [Line Items]
Loan amounts outstanding under the loan pools	9.8denn_GuarantorObligationsLoansPayableOfFranchisee / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_FinancialGuaranteeMember	6.1denn_GuarantorObligationsLoansPayableOfFranchisee / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_FinancialGuaranteeMember
Maximum payments guaranteed	$ 1.7us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_FinancialGuaranteeMember

X

- Definition

Guarantor Obligations, Loans Payable of Franchisee

+ References

No definition available.

+ Details

Name:	denn_GuarantorObligationsLoansPayableOfFranchisee
Namespace Prefix:	denn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_GuaranteeObligationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_FinancialGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: