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Goodwill and Other Intangible Assets - Schedule of Components of Amortized Intangible Assets , Includes in Intangible Assets, Net (Detail) - USD ($) $ in Thousands		Dec. 28, 2019	Dec. 29, 2018
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount		$ 72,757	$ 77,519
Accumulated Amortization		18,580	18,338
Non-compete agreements [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount		4,438	3,358
Accumulated Amortization		1,493	886
Favorable leases [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	[1]		7,738
Accumulated Amortization	[1]		4,282
Pharmacy customer prescription lists [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount		8,200	6,354
Accumulated Amortization		4,481	4,377
Customer relationships [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount		57,937	57,937
Accumulated Amortization		11,497	7,835
Trade Names [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount		1,068	1,068
Accumulated Amortization		687	536
Franchise fees and other [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount		1,114	1,064
Accumulated Amortization		$ 422	$ 422
[1] (a) Upon the adoption of ASU 2016-02 at the beginning of 2019, favorable leases were reclassified as a component of Operating lease assets within the consolidated balance sheets

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

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