BUSINESS SEGMENTS - Schedule of Business Segments (Details) - Operating Segments [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2025	Jun. 29, 2024	Jun. 28, 2025	Jun. 29, 2024	Sep. 28, 2024
REVENUES:
TOTAL REVENUE	$ 51,386	$ 48,340	$ 153,740	$ 139,996
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD	21,734	20,807	66,278	60,220
GROSS PROFIT	29,652	27,533	87,462	79,776
ADDITIONAL REVENUES:
TOTAL ADDITIONAL REVENUES:	778	762	2,318	2,315
Capital Expenditures:
Consolidated Totals	3,225	968	4,956	5,282
Identifiable Assets:
Total identifiable assets	140,694		140,694		$ 142,082
ADDITIONAL EXPENSES:
Payroll and related costs	16,106	15,301	48,036	44,658
Operating expenses	7,029	6,268	20,640	18,565
Occupancy costs	2,070	2,024	6,127	6,118
Selling, general and administrative expenses	1,084	1,288	4,036	3,867
Depreciation and amortization	1,167	1,127	3,474	3,119
TOTAL ADDITIONAL EXPENSES:	27,456	26,008	82,313	76,327
Income (Loss) from Operations	2,974	2,287	7,467	5,764
OTHER INCOME (EXPENSE):
Gain on sale of property and equipment		2		2
OTHER INCOME (EXPENSE):
Interest expense	(237)	(251)	(722)	(768)
Interest and other income (expense)	(6)	46	310	131
OTHER INCOME (EXPENSE)	(243)	(203)	(412)	(635)
Income (loss) before provision for income taxes:	2,731	2,084	7,055	5,129
Provision for income taxes	(242)	(282)	(588)	(209)
Net Income (Loss)	2,489	1,802	6,467	4,920
Less: Net Income attributable to noncontrolling interests	(1,097)	(681)	(2,330)	(1,748)
Net Income (Loss) Attributable to Flanigan’s Enterprises, Inc.	1,392	1,121	4,137	3,172
Restaurant food sales [Member]
REVENUES:
TOTAL REVENUE	31,933	30,471	93,645	86,182
Intersegment revenues [Member]
REVENUES:
TOTAL REVENUE
Restaurant bar sales [Member]
REVENUES:
TOTAL REVENUE	7,931	7,577	24,087	22,780
Package goods sales [Member]
REVENUES:
TOTAL REVENUE	11,522	10,292	36,008	31,034
Cost of merchandise sold [Member]
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD	21,734	20,807	66,278	60,220
Intersegment Cost of Merchandise sold [Member]
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD
Franchise related revenues [Member]
ADDITIONAL REVENUES:
Franchise-related revenues	442	428	1,332	1,291
Intersegment Franchise-related revenues [Member]
ADDITIONAL REVENUES:
Intersegment franchise-related revenues
Rental income [Member]
ADDITIONAL REVENUES:
Rental income	270	278	810	844
Inter Segment Rental income [Member]
ADDITIONAL REVENUES:
Intersegment rental income
Intersegment Partnership income [Member]
ADDITIONAL REVENUES:
Intersegment partnership income
Other operating income [Member]
ADDITIONAL REVENUES:
Other revenues	66	56	176	180
Intersegment Operating Expenses [Member]
ADDITIONAL EXPENSES:
Intersegment operating expenses
Intersegment Occupancy Costs [Member]
ADDITIONAL EXPENSES:
Intersegment occupancy costs
Intersegment Selling, general and administrative expenses [Member]
ADDITIONAL EXPENSES:
Intersegment selling, general and administrative expenses
Intersegment interest expense [Member]
OTHER INCOME (EXPENSE):
Interest expense
Intersegment interest and other income [Member]
OTHER INCOME (EXPENSE):
Interest and other income (expense)
Payroll and related costs [Member]
ADDITIONAL EXPENSES:
Intersegment payroll costs
Intersegment payroll costs [Member]
ADDITIONAL EXPENSES:
Intersegment payroll costs
Restaurants [Member]
Capital Expenditures:
Consolidated Totals	2,983	848	4,100	4,486
Identifiable Assets:
Total identifiable assets	78,186		78,186		77,613
Package stores [Member]
Capital Expenditures:
Consolidated Totals	24	48	201	114
Identifiable Assets:
Total identifiable assets	23,237		23,237		23,084
Corporate [Member]
Capital Expenditures:
Consolidated Totals	218	72	655	682
Identifiable Assets:
Total identifiable assets	39,271		39,271		$ 41,385
Restaurant [Member]
REVENUES:
TOTAL REVENUE	41,053	39,140	121,025	112,077
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD	14,144	14,196	42,642	40,260
GROSS PROFIT	26,909	24,944	78,383	71,817
ADDITIONAL REVENUES:
TOTAL ADDITIONAL REVENUES:	39	40	112	127
ADDITIONAL EXPENSES:
Payroll and related costs	13,104	12,658	39,351	36,777
Operating expenses	5,803	5,202	17,000	15,328
Occupancy costs	1,704	1,623	5,004	4,942
Selling, general and administrative expenses	381	259	1,241	828
Depreciation and amortization	880	864	2,647	2,338
TOTAL ADDITIONAL EXPENSES:	22,674	21,385	67,630	62,556
Income (Loss) from Operations	4,274	3,599	10,865	9,388
OTHER INCOME (EXPENSE):
Gain on sale of property and equipment
OTHER INCOME (EXPENSE):
Interest expense
Interest and other income (expense)	2	4	10	17
OTHER INCOME (EXPENSE)	2	4	10	17
Income (loss) before provision for income taxes:	4,276	3,603	10,875	9,405
Provision for income taxes
Net Income (Loss)	4,276	3,603	10,875	9,405
Less: Net Income attributable to noncontrolling interests	(1,097)	(681)	(2,330)	(1,748)
Net Income (Loss) Attributable to Flanigan’s Enterprises, Inc.	3,179	2,922	8,545	7,657
Restaurant [Member] | Restaurant food sales [Member]
REVENUES:
TOTAL REVENUE	31,933	30,471	93,645	86,182
Restaurant [Member] | Intersegment revenues [Member]
REVENUES:
TOTAL REVENUE	1,189	1,092	3,293	3,115
Restaurant [Member] | Restaurant bar sales [Member]
REVENUES:
TOTAL REVENUE	7,931	7,577	24,087	22,780
Restaurant [Member] | Package goods sales [Member]
REVENUES:
TOTAL REVENUE
Restaurant [Member] | Cost of merchandise sold [Member]
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD	12,955	13,104	39,349	37,145
Restaurant [Member] | Intersegment Cost of Merchandise sold [Member]
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD	1,189	1,092	3,293	3,115
Restaurant [Member] | Franchise related revenues [Member]
ADDITIONAL REVENUES:
Franchise-related revenues
Restaurant [Member] | Intersegment Franchise-related revenues [Member]
ADDITIONAL REVENUES:
Intersegment franchise-related revenues
Restaurant [Member] | Rental income [Member]
ADDITIONAL REVENUES:
Rental income
Restaurant [Member] | Inter Segment Rental income [Member]
ADDITIONAL REVENUES:
Intersegment rental income
Restaurant [Member] | Intersegment Partnership income [Member]
ADDITIONAL REVENUES:
Intersegment partnership income
Restaurant [Member] | Other operating income [Member]
ADDITIONAL REVENUES:
Other revenues	39	40	112	127
Restaurant [Member] | Intersegment Operating Expenses [Member]
ADDITIONAL EXPENSES:
Intersegment operating expenses	636	613	1,888	1,845
Restaurant [Member] | Intersegment Occupancy Costs [Member]
ADDITIONAL EXPENSES:
Intersegment occupancy costs	166	166	499	498
Restaurant [Member] | Intersegment Selling, general and administrative expenses [Member]
ADDITIONAL EXPENSES:
Intersegment selling, general and administrative expenses
Restaurant [Member] | Intersegment interest expense [Member]
OTHER INCOME (EXPENSE):
Interest expense
Restaurant [Member] | Intersegment interest and other income [Member]
OTHER INCOME (EXPENSE):
Interest and other income (expense)
Restaurant [Member] | Payroll and related costs [Member]
ADDITIONAL EXPENSES:
Intersegment payroll costs
Restaurant [Member] | Intersegment payroll costs [Member]
ADDITIONAL EXPENSES:
Intersegment payroll costs
Package [Member]
REVENUES:
TOTAL REVENUE	11,522	10,292	36,008	31,034
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD	8,779	7,703	26,929	23,075
GROSS PROFIT	2,743	2,589	9,079	7,959
ADDITIONAL REVENUES:
TOTAL ADDITIONAL REVENUES:
ADDITIONAL EXPENSES:
Payroll and related costs	928	816	2,673	2,394
Operating expenses	811	699	2,327	2,051
Occupancy costs	206	248	656	745
Selling, general and administrative expenses	43	42	130	132
Depreciation and amortization	127	123	378	375
TOTAL ADDITIONAL EXPENSES:	2,164	1,969	6,309	5,816
Income (Loss) from Operations	579	620	2,770	2,143
OTHER INCOME (EXPENSE):
Gain on sale of property and equipment
OTHER INCOME (EXPENSE):
Interest expense
Interest and other income (expense)	24	23	64	60
OTHER INCOME (EXPENSE)	24	28	64	75
Income (loss) before provision for income taxes:	603	648	2,834	2,218
Provision for income taxes
Net Income (Loss)	603	648	2,834	2,218
Less: Net Income attributable to noncontrolling interests
Net Income (Loss) Attributable to Flanigan’s Enterprises, Inc.	603	648	2,834	2,218
Package [Member] | Restaurant food sales [Member]
REVENUES:
TOTAL REVENUE
Package [Member] | Intersegment revenues [Member]
REVENUES:
TOTAL REVENUE
Package [Member] | Restaurant bar sales [Member]
REVENUES:
TOTAL REVENUE
Package [Member] | Package goods sales [Member]
REVENUES:
TOTAL REVENUE	11,522	10,292	36,008	31,034
Package [Member] | Cost of merchandise sold [Member]
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD	8,779	7,703	26,929	23,075
Package [Member] | Intersegment Cost of Merchandise sold [Member]
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD
Package [Member] | Franchise related revenues [Member]
ADDITIONAL REVENUES:
Franchise-related revenues
Package [Member] | Intersegment Franchise-related revenues [Member]
ADDITIONAL REVENUES:
Intersegment franchise-related revenues
Package [Member] | Rental income [Member]
ADDITIONAL REVENUES:
Rental income
Package [Member] | Inter Segment Rental income [Member]
ADDITIONAL REVENUES:
Intersegment rental income
Package [Member] | Intersegment Partnership income [Member]
ADDITIONAL REVENUES:
Intersegment partnership income
Package [Member] | Other operating income [Member]
ADDITIONAL REVENUES:
Other revenues
Package [Member] | Intersegment Operating Expenses [Member]
ADDITIONAL EXPENSES:
Intersegment operating expenses
Package [Member] | Intersegment Occupancy Costs [Member]
ADDITIONAL EXPENSES:
Intersegment occupancy costs	49	47	145	137
Package [Member] | Intersegment Selling, general and administrative expenses [Member]
ADDITIONAL EXPENSES:
Intersegment selling, general and administrative expenses
Package [Member] | Intersegment interest expense [Member]
OTHER INCOME (EXPENSE):
Interest expense
Package [Member] | Intersegment interest and other income [Member]
OTHER INCOME (EXPENSE):
Interest and other income (expense)		5		15
Package [Member] | Payroll and related costs [Member]
ADDITIONAL EXPENSES:
Intersegment payroll costs		(6)
Package [Member] | Intersegment payroll costs [Member]
ADDITIONAL EXPENSES:
Intersegment payroll costs				(18)
Corporate [Member]
REVENUES:
TOTAL REVENUE
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD
GROSS PROFIT
ADDITIONAL REVENUES:
TOTAL ADDITIONAL REVENUES:	2,921	2,683	8,280	8,293
ADDITIONAL EXPENSES:
Payroll and related costs	2,074	1,827	6,012	5,487
Operating expenses	415	367	1,313	1,186
Occupancy costs	160	153	467	431
Selling, general and administrative expenses	660	987	2,665	2,907
Depreciation and amortization	160	140	449	406
TOTAL ADDITIONAL EXPENSES:	4,221	4,262	13,235	13,089
Income (Loss) from Operations	(1,300)	(1,579)	(4,955)	(4,796)
OTHER INCOME (EXPENSE):
Gain on sale of property and equipment		2		2
OTHER INCOME (EXPENSE):
Interest expense	(237)	(251)	(722)	(768)
Interest and other income (expense)	(32)	19	236	54
OTHER INCOME (EXPENSE)	(269)	(230)	(486)	(712)
Income (loss) before provision for income taxes:	(1,569)	(1,809)	(5,441)	(5,508)
Provision for income taxes	(242)	(282)	(588)	(209)
Net Income (Loss)	(1,811)	(2,091)	(6,029)	(5,717)
Less: Net Income attributable to noncontrolling interests
Net Income (Loss) Attributable to Flanigan’s Enterprises, Inc.	(1,811)	(2,091)	(6,029)	(5,717)
Corporate [Member] | Restaurant food sales [Member]
REVENUES:
TOTAL REVENUE
Corporate [Member] | Intersegment revenues [Member]
REVENUES:
TOTAL REVENUE
Corporate [Member] | Restaurant bar sales [Member]
REVENUES:
TOTAL REVENUE
Corporate [Member] | Package goods sales [Member]
REVENUES:
TOTAL REVENUE
Corporate [Member] | Cost of merchandise sold [Member]
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD
Corporate [Member] | Intersegment Cost of Merchandise sold [Member]
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD
Corporate [Member] | Franchise related revenues [Member]
ADDITIONAL REVENUES:
Franchise-related revenues	442	428	1,332	1,291
Corporate [Member] | Intersegment Franchise-related revenues [Member]
ADDITIONAL REVENUES:
Intersegment franchise-related revenues	1,386	1,390	4,216	4,484
Corporate [Member] | Rental income [Member]
ADDITIONAL REVENUES:
Rental income	270	278	810	844
Corporate [Member] | Inter Segment Rental income [Member]
ADDITIONAL REVENUES:
Intersegment rental income	216	214	645	635
Corporate [Member] | Intersegment Partnership income [Member]
ADDITIONAL REVENUES:
Intersegment partnership income	580	357	1,213	986
Corporate [Member] | Other operating income [Member]
ADDITIONAL REVENUES:
Other revenues	27	16	64	53
Corporate [Member] | Intersegment Operating Expenses [Member]
ADDITIONAL EXPENSES:
Intersegment operating expenses	680	716	2,114	2,457
Corporate [Member] | Intersegment Occupancy Costs [Member]
ADDITIONAL EXPENSES:
Intersegment occupancy costs
Corporate [Member] | Intersegment Selling, general and administrative expenses [Member]
ADDITIONAL EXPENSES:
Intersegment selling, general and administrative expenses	72		215	215
Corporate [Member] | Intersegment interest expense [Member]
OTHER INCOME (EXPENSE):
Interest expense	(2)	(2)	(6)	(6)
Corporate [Member] | Intersegment interest and other income [Member]
OTHER INCOME (EXPENSE):
Interest and other income (expense)	2	2	6	6
Corporate [Member] | Payroll and related costs [Member]
ADDITIONAL EXPENSES:
Intersegment payroll costs
Corporate [Member] | Intersegment payroll costs [Member]
ADDITIONAL EXPENSES:
Intersegment payroll costs
Eliminations [Member]
REVENUES:
TOTAL REVENUE	(1,189)	(1,092)	(3,293)	(3,115)
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD	(1,189)	(1,092)	(3,293)	(3,115)
GROSS PROFIT
ADDITIONAL REVENUES:
TOTAL ADDITIONAL REVENUES:	(2,182)	(1,961)	(6,074)	(6,105)
ADDITIONAL EXPENSES:
Payroll and related costs
Operating expenses
Occupancy costs
Selling, general and administrative expenses
Depreciation and amortization
TOTAL ADDITIONAL EXPENSES:	(1,603)	(1,608)	(4,861)	(5,134)
Income (Loss) from Operations	(579)	(353)	(1,213)	(971)
OTHER INCOME (EXPENSE):
Gain on sale of property and equipment
OTHER INCOME (EXPENSE):
Interest expense
Interest and other income (expense)
OTHER INCOME (EXPENSE)		(5)		(15)
Income (loss) before provision for income taxes:	(579)	(358)	(1,213)	(986)
Provision for income taxes
Net Income (Loss)	(579)	(358)	(1,213)	(986)
Less: Net Income attributable to noncontrolling interests
Net Income (Loss) Attributable to Flanigan’s Enterprises, Inc.	(579)	(358)	(1,213)	(986)
Eliminations [Member] | Restaurant food sales [Member]
REVENUES:
TOTAL REVENUE
Eliminations [Member] | Intersegment revenues [Member]
REVENUES:
TOTAL REVENUE	(1,189)	(1,092)	(3,293)	(3,115)
Eliminations [Member] | Restaurant bar sales [Member]
REVENUES:
TOTAL REVENUE
Eliminations [Member] | Package goods sales [Member]
REVENUES:
TOTAL REVENUE
Eliminations [Member] | Cost of merchandise sold [Member]
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD
Eliminations [Member] | Intersegment Cost of Merchandise sold [Member]
COST OF MERCHANDISE SOLD:
TOTAL COST OF MERCHANDISE SOLD	(1,189)	(1,092)	(3,293)	(3,115)
Eliminations [Member] | Franchise related revenues [Member]
ADDITIONAL REVENUES:
Franchise-related revenues
Eliminations [Member] | Intersegment Franchise-related revenues [Member]
ADDITIONAL REVENUES:
Intersegment franchise-related revenues	(1,386)	(1,390)	(4,216)	(4,484)
Eliminations [Member] | Rental income [Member]
ADDITIONAL REVENUES:
Rental income
Eliminations [Member] | Inter Segment Rental income [Member]
ADDITIONAL REVENUES:
Intersegment rental income	(216)	(214)	(645)	(635)
Eliminations [Member] | Intersegment Partnership income [Member]
ADDITIONAL REVENUES:
Intersegment partnership income	(580)	(357)	(1,213)	(986)
Eliminations [Member] | Other operating income [Member]
ADDITIONAL REVENUES:
Other revenues
Eliminations [Member] | Intersegment Operating Expenses [Member]
ADDITIONAL EXPENSES:
Intersegment operating expenses	(1,316)	(1,329)	(4,002)	(4,302)
Eliminations [Member] | Intersegment Occupancy Costs [Member]
ADDITIONAL EXPENSES:
Intersegment occupancy costs	(215)	(213)	(644)	(635)
Eliminations [Member] | Intersegment Selling, general and administrative expenses [Member]
ADDITIONAL EXPENSES:
Intersegment selling, general and administrative expenses	(72)		(215)	(215)
Eliminations [Member] | Intersegment interest expense [Member]
OTHER INCOME (EXPENSE):
Interest expense	2	2	6	6
Eliminations [Member] | Intersegment interest and other income [Member]
OTHER INCOME (EXPENSE):
Interest and other income (expense)	$ (2)	(7)	$ (6)	(21)
Eliminations [Member] | Payroll and related costs [Member]
ADDITIONAL EXPENSES:
Intersegment payroll costs		$ 6
Eliminations [Member] | Intersegment payroll costs [Member]
ADDITIONAL EXPENSES:
Intersegment payroll costs				$ 18