Property, Net (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 30, 2015	Dec. 31, 2014	Dec. 25, 2013
Property Owned [Abstract]
Total property owned	$ 345,382	$ 338,030
Less accumulated depreciation	235,967	241,678
Property owned, net	109,415	96,352
Property Held Under Capital Leases [Abstract]
Buildings, vehicles, and other equipment held under capital leases	27,429	26,836
Less accumulated amortization	12,028	13,411
Property held under capital leases, net	15,401	13,425
Total property, net	124,816	109,777
Depreciation expense, including amortization of property under capital leases	20,000	19,200	$ 18,600
Franchised Units [Member]
Property Owned [Abstract]
Total property owned	77,743	78,075
Less accumulated depreciation	52,872	53,994
Property owned, net	24,871	24,081
Property Held Under Capital Leases [Abstract]
Buildings, vehicles, and other equipment held under capital leases	4,573	7,251
Less accumulated amortization	3,003	5,208
Property held under capital leases, net	1,570	2,043
Total property, net	26,441	26,124
Land [Member]
Property Owned [Abstract]
Total property owned	29,856	27,198
Land [Member] \| Franchised Units [Member]
Property Owned [Abstract]
Total property owned	16,192	14,977
Building and leasehold improvements [Member]
Property Owned [Abstract]
Total property owned	238,134	233,339
Building and leasehold improvements [Member] \| Franchised Units [Member]
Property Owned [Abstract]
Total property owned	61,551	63,098
Other property and equipment [Member]
Property Owned [Abstract]
Total property owned	$ 77,392	$ 77,493

Cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land or leased assets).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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 210.5-02.14)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.

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The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
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-Subparagraph (a)
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The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Gross amount of long-lived physical assets excluding assets held under lease agreements used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Subparagraph (SX 210.5-02.13)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets excluding assets held under lease agreements used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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