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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. 30, 2017 | Dec. 31, 2016
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Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 78,521 | $ 36,786
Accumulated Amortization | 13,879 | 10,923
Non-compete agreements [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 3,408 | 1,244
Accumulated Amortization | 397 | 978
Favorable leases [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 8,251 | 8,744
Accumulated Amortization | 4,332 | 3,807
Pharmacy customer prescription lists [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 6,810 | 7,168
Accumulated Amortization | 4,210 | 3,445
Customer relationships [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 57,937 | 17,633
Accumulated Amortization | 4,173 | 2,187
Trade Names [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 1,068 | 1,068
Accumulated Amortization | 386 | 236
Franchise fees and other [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 1,047 | 929
Accumulated Amortization | $ 381 | $ 270

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition 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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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