Note 6 - Profit-sharing and ESOP Plan (Details Textual)	12 Months Ended
Jul. 01, 2018 USD ($)	Jul. 02, 2017 USD ($)
Defined Contribution Plan Number of Plans	2
Defined Contribution Plan Service Requirement	1 year
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 113,000	$ 90,000
Employee Stock Ownership Plan (ESOP), Cash Contributions to ESOP	$ 113,000	$ 90,000

Number of defined contributions plans administered by the company.

No definition available.

Name:	bwla_DefinedContributionPlanNumberOfPlans
Namespace Prefix:	bwla_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the estimated period of time over which an employee is required to provide service in exchange for the defined contribution award. This period may be explicit or implicit based on the terms of the award, and may be presented in a variety of ways (years or hours).

+ References

No definition available.

+ Details

Name:	bwla_DefinedContributionPlanServiceRequirement
Namespace Prefix:	bwla_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

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

- Definition

This item represents the amount of cash contributions during the period made by the entity to the Employee Stock Ownership Plan (ESOP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929

+ Details

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