Common Stock Ownership Concentration

No definition available.

Name:	lnce_CommonStockOwnershipConcentration
Namespace Prefix:	lnce_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of Facilities

+ References

No definition available.

+ Details

Name:	lnce_NumberofFacilities
Namespace Prefix:	lnce_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of related parties

+ References

No definition available.

+ Details

Name:	lnce_Numberofrelatedparties
Namespace Prefix:	lnce_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Right to repurchase asset period

+ References

No definition available.

+ Details

Name:	lnce_RightToRepurchaseAssetPeriod
Namespace Prefix:	lnce_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

+ Details

Name:	us-gaap_GuaranteeObligationsCurrentCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Related Parties
-URI http://asc.fasb.org/extlink&oid=16382449

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07.1(c))
-URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999

+ Details

Name:	us-gaap_RevenueFromRelatedParties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	dei_EntityByLocationAxis=lnce_EckertSeamansCherinAndMellottLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_GuaranteeObligationsByNatureAxis=lnce_LoanServiceAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_DirectorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=lnce_PatriciaA.WarehimeDirectoroftheCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=lnce_LeasePaymentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_ManagementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=lnce_SyndicatedMarketDataProviderMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Related Party Transactions (Narrative) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2016 USD ($)	Jul. 04, 2015 USD ($)	Jul. 02, 2016 USD ($)	Jul. 04, 2015 USD ($)	Jan. 02, 2016 USD ($)
Related Party Transaction [Line Items]
Right to repurchase asset period, days			30 days
Revenue from related parties	$ 0.1	$ 0.1	$ 0.3	$ 0.2
Eckert Seamans Cherin And Mellott L L C
Related Party Transaction [Line Items]
Payments made to related party	0.1	0.1	0.2	0.5
Loan Service Agreements
Related Party Transaction [Line Items]
Guarantor obligations, current carrying value	$ 24.8		$ 24.8		$ 28.0
Director
Related Party Transaction [Line Items]
Number of related parties	1		1
Director \| Eckert Seamans Cherin And Mellott L L C
Related Party Transaction [Line Items]
Number of related parties	1		1
Minimum \| Patricia A. Warehime, Director of the Company
Related Party Transaction [Line Items]
Common stock ownership concentration			5.00%
Lease Payment
Related Party Transaction [Line Items]
Number of related parties	2		2
Lease Payment \| Management
Related Party Transaction [Line Items]
Payments made to related party	$ 0.1	$ 0.1	$ 0.2	$ 0.2
Number of Facilities	2		2
Number of related parties	1		1
Syndicated Market Data Provider \| Director
Related Party Transaction [Line Items]
Payments made to related party	$ 0.8		$ 1.6
Number of related parties	1		1