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Leases | 12 Months Ended
--- | ---
Dec. 27, 2017
Leases [Abstract] |
Leases | Leases Our operations utilize property, facilities and equipment leased from others. Buildings and facilities are primarily used for restaurants and support facilities. Many of our restaurants are operated under lease arrangements which generally provide for a fixed base rent, and, in many instances, contingent rent based on a percentage of gross revenues. Initial terms of land and restaurant building leases generally range from 10 to 15 years, exclusive of options to renew, which are typically for five year periods. Leases of other equipment consist primarily of restaurant equipment, computer systems and vehicles. Minimum future lease commitments and amounts to be received as lessor or sublessor under non-cancelable leases, including leases for both open and closed restaurants and optional renewal periods that have been included in the lease term, at December 27, 2017 were as follows:
| Commitments |  | Lease Receipts
| Capital |  | Operating |  | Operating
| (In thousands)
2018 | $ | 8,863 |  |  | $ | 26,214 |  |  | $ | 23,681 |
2019 | 8,429 |  |  | 23,152 |  |  | 21,029 |
2020 | 7,796 |  |  | 19,403 |  |  | 18,355 |
2021 | 7,142 |  |  | 16,510 |  |  | 16,394 |
2022 | 6,483 |  |  | 13,787 |  |  | 14,669 |
Thereafter | 33,073 |  |  | 54,067 |  |  | 67,606 |
Total | 71,786 |  |  | $ | 153,133 |  |  | $ | 161,734 |
Less imputed interest | 41,564 |  |  |  |  |
Present value of capital lease obligations | $ | 30,222 |  |  |  |  |
Rent expense is a component of both occupancy expense and costs of franchise and license revenue in our Consolidated Statements of Income. Lease and sublease rental income is a component of franchise and license revenue in our Consolidated Statements of Income. Rental expense and income were comprised of the following:
| Fiscal Year Ended
| December 27, 2017 |  | December 28, 2016 |  | December 30, 2015
| (In thousands)
Rental expense: |  |  |  |  |
Included as a component of occupancy: |  |  |  |  |
Base rents | $ | 9,315 |  |  | $ | 8,602 |  |  | $ | 8,998 |
Contingent rents | 3,168 |  |  | 3,351 |  |  | 3,134 |
Included as a component of costs of franchise and license revenue: |  |  |  |  |
Base rents | $ | 17,674 |  |  | $ | 19,883 |  |  | $ | 21,751 |
Contingent rents | $ | 2,864 |  |  | $ | 3,077 |  |  | $ | 2,897 |
Total rental expense | $ | 33,021 |  |  | $ | 34,913 |  |  | $ | 36,780 |
Rental income: |  |  |  |  |
Included as a component of franchise and license revenue: |  |  |  |  |
Base rents | $ | 25,781 |  |  | $ | 28,183 |  |  | $ | 30,166 |
Contingent rents | 5,042 |  |  | 5,337 |  |  | 5,305 |
Total rental income | $ | 30,823 |  |  | $ | 33,520 |  |  | $ | 35,471 |

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- Definition Description and amount of entity's leasing arrangements for operating and capital leases. This element can be used to disclose the entity's entire lease disclosure as a single block of text. + References No definition available. + Details
Name: | denn_LeasesDisclosureTextBlock
Namespace Prefix: | denn_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration