Restaurant Closure Charges, Net - Restaurant Closure Liability Activity (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 20, 2017	Jun. 14, 2016
Restructuring Reserve [Roll Forward]
Closure liability, Beginning balance	$ 3,100
Charges for accretion in current period	85	$ (137)
Closure liability, Ending balance	2,800
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Closure liability, Beginning balance	1,365
Charges for accretion in current period	51
Cash payments	(141)
Closure liability, Ending balance	1,275
Closure of 12 Underperforming Restaurants [Member]
Restructuring Reserve [Roll Forward]
Closure liability, Beginning balance	1,773
Charges for accretion in current period	33
Cash payments	(316)
Closure liability, Ending balance	1,490
Closure of 12 Underperforming Restaurants [Member] \| Contract termination costs
Restructuring Reserve [Roll Forward]
Closure liability, Beginning balance	1,773
Charges for accretion in current period	33
Cash payments	(316)
Closure liability, Ending balance	1,490
Closure of 12 Underperforming Restaurants [Member] \| Other associated costs
Restructuring Reserve [Roll Forward]
Closure liability, Beginning balance	0
Charges for accretion in current period	0
Cash payments	0
Closure liability, Ending balance	$ 0

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.P.3)
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
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-Section S99
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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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