Leases - Schedule of Minimum Future Rental Income Under Non-Cancelable Operating Lease (Detail) $ in Thousands	Dec. 27, 2017 USD ($)
Operating Leases, Future Minimum Payments Receivable [Abstract]
December 26, 2018	$ 274
December 25, 2019	184
December 30, 2020	188
December 29, 2021	146
December 28, 2022	132
Thereafter	352
Total future minimum rental income	$ 1,276

Future minimum rental payments in aggregate as of the balance sheet date under operating leases.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

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- Definition

Future rental payments receivable within one year of the balance sheet date under an operating lease.

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- Definition

Future rental payments receivable within the fifth year from the balance sheet date under an operating lease.

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- Definition

Future rental payments receivable within the fourth year from the balance sheet date under an operating lease.

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- Definition

Future rental payments receivable within the third year from the balance sheet date under an operating lease.

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- Definition

Future rental payments receivable within the second year from the balance sheet date under an operating lease.

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- Definition

Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

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