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Associate Retirement Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	4 Months Ended		9 Months Ended	4 Months Ended	12 Months Ended	4 Months Ended	12 Months Ended
	Apr. 19, 2014 Central States, Southeast and Southwest Areas Pension Fund [Member]	Apr. 27, 2013 Central States, Southeast and Southwest Areas Pension Fund [Member]	Dec. 28, 2013 Central States, Southeast and Southwest Areas Pension Fund [Member]	Apr. 19, 2014 Super Foods Pension Plan [Member]	Jan. 03, 2015 Super Foods Pension Plan [Member] Forecast [Member]	Apr. 19, 2014 Cash Balance Pension Plan [Member]	Jan. 03, 2015 Cash Balance Pension Plan [Member] Forecast [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Standard pension funding carryover				$ 0.9	$ 2.3	$ 0	$ 0
Contribution as a percentage of total contributions	1.00%
Pension contributions during plan year	$ 4.1	$ 2.9	$ 6.8
Maximum company contribution as percentage of total employer contributions	5.00%

X

- Definition

Defined contribution plan, contribution as percentage of total contributions.

+ References

No definition available.

+ Details

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X

- Definition

Multiemployer plans fund administrators percentage of aggregate employer.

+ References

No definition available.

+ Details

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X

- Details

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X

- Definition

Amount of contributions made to the multiemployer plan by all employers who participate in the plan. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 80

-Section 50

-Paragraph 7

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450678-114947

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X

- Definition

The amount of cash or cash equivalents contributed by the entity to fund its pension plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585

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