Name:	senea_AccountsReceivableVegetableAndFruitProductsSoldMaximumPaymentTerm
Namespace Prefix:	senea_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The general payment term for accounts receivable related to the sale of the reporting entity's vegetable and fruit products.

No definition available.

Name:	senea_AccountsReceivableVegetableAndFruitProductsSoldStandardPaymentTerm
Namespace Prefix:	senea_
Data Type:	xbrli:durationItemType
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Period Type:	duration

Maximum borrowing capacity under the credit facility during the reporting entity's nonproduction period without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

No definition available.

Name:	senea_LineOfCreditFacilityMaximumBorrowingCapacityDuringNonproductionPeriod
Namespace Prefix:	senea_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Maximum borrowing capacity under the credit facility during the reporting entity's production period without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

No definition available.

Name:	senea_LineOfCreditFacilityMaximumBorrowingCapacityDuringProductionPeriod
Namespace Prefix:	senea_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Period Type:	instant

Amount of the required periodic payments applied to principal.

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Amount, after accumulated amortization, of debt discount.

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