INVESTMENT IN LIMITED PARTNERSHIPS (Details)	12 Months Ended
Sep. 27, 2025
Investment in Limited Partnerships [Line Items]
Return of capital, percentage	25.00%
Percentage of sales fee	3.00%
Limited Partnership [Member]
Investment in Limited Partnerships [Line Items]
Number of restaurants	11
Fort Lauderdale, Florida [Member]
Investment in Limited Partnerships [Line Items]
Ownership percentage	25.00%
Flanigan’s Seafood Bar and Grill [Member]
Investment in Limited Partnerships [Line Items]
Percentage of gross sales	3.00%
Flanigan’s Seafood Bar and Grill [Member] \| Surfside, Florida [Member]
Investment in Limited Partnerships [Line Items]
Percentage of limited partner	46.00%
Percentage of remaining limited partnership interest	33.30%
Flanigan’s Seafood Bar and Grill [Member] \| Kendall, Florida [Member]
Investment in Limited Partnerships [Line Items]
Percentage of limited partner	41.00%
Percentage of remaining limited partnership interest	28.30%
Flanigan’s Seafood Bar and Grill [Member] \| West Miami, Florida [Member]
Investment in Limited Partnerships [Line Items]
Percentage of limited partner	32.00%
Percentage of remaining limited partnership interest	32.70%
Flanigan’s Seafood Bar and Grill [Member] \| Wellington, Florida [Member]
Investment in Limited Partnerships [Line Items]
Percentage of limited partner	33.00%
Percentage of remaining limited partnership interest	21.90%
Flanigan’s Seafood Bar and Grill [Member] \| Pinecrest, Florida [Member]
Investment in Limited Partnerships [Line Items]
Percentage of limited partner	50.00%
Percentage of remaining limited partnership interest	19.40%
Flanigan’s Seafood Bar and Grill [Member] \| Pembroke Pines, Florida [Member]
Investment in Limited Partnerships [Line Items]
Percentage of limited partner	29.00%
Percentage of remaining limited partnership interest	23.00%
Flanigan’s Seafood Bar and Grill [Member] \| Davie, Florida [Member]
Investment in Limited Partnerships [Line Items]
Percentage of limited partner	54.00%
Percentage of remaining limited partnership interest	12.00%
Flanigan’s Seafood Bar and Grill [Member] \| Miami, Florida [Member]
Investment in Limited Partnerships [Line Items]
Percentage of limited partner	11.00%
Percentage of remaining limited partnership interest	26.30%
Flanigan’s Seafood Bar and Grill [Member] \| Sunrise, Florida [Member]
Investment in Limited Partnerships [Line Items]
Percentage of limited partner	7.00%
Percentage of remaining limited partnership interest	32.10%
Percentage of initial cash invested	26.50%
Flanigan’s Seafood Bar and Grill [Member] \| Miramar, Florida [Member]
Investment in Limited Partnerships [Line Items]
Percentage of remaining limited partnership interest	25.50%
Percentage of initial cash invested	45.00%
Flanigan’s Seafood Bar and Grill [Member] \| Fort Lauderdale, Florida [Member]
Investment in Limited Partnerships [Line Items]
Percentage of limited partner	25.00%
Percentage of remaining limited partnership interest	56.90%

Percentage of gross sales.

No definition available.

Name:	bdl_PercentageOfGrossSales
Namespace Prefix:	bdl_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percent fee of gross sales for the use of a service mark.

+ References

No definition available.

+ Details

Name:	bdl_PercentageOfGrossSalesFeeForUseOfServiceMark
Namespace Prefix:	bdl_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of initial cash invested.

+ References

No definition available.

+ Details

Name:	bdl_PercentageOfInitialCashInvested
Namespace Prefix:	bdl_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage increase (decrease) in fund net asset value, assuming reinvestment of dividends and capital gain distributions.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 27
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478494/946-205-50-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478494/946-205-50-18

+ Details

Name:	us-gaap_InvestmentCompanyTotalReturn
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482987/272-10-50-3

+ Details

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of restaurants.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRestaurants
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

+ Details

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

- Definition

The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=bdl_LimitedPartnershipMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=bdl_FortLauderdaleFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=bdl_FlanigansSeafoodBarAndGrillMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=bdl_FlanigansSeafoodBarAndGrillMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=bdl_SurfsideFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=bdl_KendallFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=bdl_WestMiamiFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=bdl_WellingtonFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=bdl_PinecrestFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=bdl_PembrokePinesFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=bdl_DavieFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=bdl_MiamiFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=bdl_SunriseFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=bdl_MiramarFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=bdl_FortLauderdaleFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: