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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.

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Impairment of Long-Lived Assets and Restaurant Closure Charges (Details)	3 Months Ended		6 Months Ended
	Jun. 16, 2020 USD ($)	Jun. 18, 2019 USD ($)	Jun. 16, 2020 USD ($) location	Jun. 18, 2019 USD ($) location	Dec. 31, 2019 USD ($)	Jan. 01, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Impairment of long-lived assets	$ 0	$ 3,694,000	$ 8,287,000	$ 3,694,000
Number of underperforming locations \| location			8	2
Restructuring closure liability	400,000		$ 400,000		$ 400,000
Current portion of restaurant closure liability	199,000		199,000		129,000
Noncurrent portion of restaurant closure liability	249,000		249,000		308,000
Operating Lease Right of Use Assets [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of long-lived assets			4,200,000	$ 2,000,000.0
Furniture and Fixtures [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of long-lived assets			1,300,000	500,000
Leasehold Improvements [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of long-lived assets			2,800,000	1,200,000
Contract Termination [Member] \| Closure of 12 Underperforming Restaurants [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring closure liability	$ 448,000	$ 118,000	448,000	118,000	$ 437,000	$ 2,092,000
Reclassified to operating lease right-of-use assets			$ 0	$ 1,900,000