BUSINESS SEGMENTS (Details) - Schedule of Business Segments - USD ($) $ in Thousands	3 Months Ended								11 Months Ended		12 Months Ended
	Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023	Dec. 31, 2022	Oct. 01, 2022	Jul. 02, 2022	Apr. 02, 2022	Jan. 01, 2022	Sep. 30, 2023	Oct. 31, 2022	Sep. 30, 2023	Oct. 01, 2022
Operating Revenues:
Total operating revenues	$ 43,360	$ 45,372	$ 43,803	$ 41,861	$ 39,724	$ 40,675	$ 40,330	$ 37,403			$ 174,396	$ 158,132
Income from Operations Reconciled to Income after Income Taxes and Net Income Attributable to Noncontrolling Interests:
Income from Operations	416	2,700	2,711	1,197	2,231	2,083	1,850	765			7,024	6,929
Interest expense											(1,067)	(757)
Interest and Other income											108	131
Gain on forgiveness of debt												3,488
Gain on sale of property and equipment												21
Income Before Provision for Income Taxes											6,065	9,812
Provision for Income Taxes											(649)	(763)
Net Income											5,416	9,049
Net Income Loss (Income) Attributable to Noncontrolling Interests											(1,417)	(2,737)
Net Income Attributable to Flanigan’s Enterprises, Inc. Stockholders	(127)	$ 1,605	$ 1,897	$ 624	1,253	$ 1,835	$ 1,660	$ 1,564	$ 5,416	$ 9,049	3,999	6,312
Depreciation and Amortization:
Depreciation and Amortization											3,584	3,012
Capital Expenditures
Capital Expenditures											20,574	9,442
Identifiable Assets:
Assets	145,769				147,492				145,769		145,769	147,492
Operating Segments [Member]
Operating Revenues:
Total operating revenues											174,396	158,132
Income from Operations Reconciled to Income after Income Taxes and Net Income Attributable to Noncontrolling Interests:
Income from Operations											10,315	8,836
Depreciation and Amortization:
Depreciation and Amortization											3,137	2,606
Capital Expenditures
Capital Expenditures											11,295	8,616
Identifiable Assets:
Assets	100,289				93,631				100,289		100,289	93,631
Restaurants [Member] | Operating Segments [Member]
Operating Revenues:
Total operating revenues											136,238	123,627
Income from Operations Reconciled to Income after Income Taxes and Net Income Attributable to Noncontrolling Interests:
Income from Operations											7,611	6,228
Depreciation and Amortization:
Depreciation and Amortization											2,669	2,290
Capital Expenditures
Capital Expenditures											7,440	6,578
Identifiable Assets:
Assets	76,575				73,596				76,575		76,575	73,596
Package stores [Member] | Operating Segments [Member]
Operating Revenues:
Total operating revenues											35,187	31,692
Income from Operations Reconciled to Income after Income Taxes and Net Income Attributable to Noncontrolling Interests:
Income from Operations											2,704	2,608
Depreciation and Amortization:
Depreciation and Amortization											468	316
Capital Expenditures
Capital Expenditures											3,855	2,038
Identifiable Assets:
Assets	23,714				20,035				23,714		23,714	20,035
Other Revenues [Member] | Operating Segments [Member]
Operating Revenues:
Total operating revenues											2,971	2,813
Corporate Expenses [Member]
Income from Operations Reconciled to Income after Income Taxes and Net Income Attributable to Noncontrolling Interests:
Income from Operations											7,024	6,929
Corporate expenses, net of other revenues											(3,291)	(1,907)
Interest expense											(1,067)	(757)
Interest and Other income											108	131
Gain on forgiveness of debt												3,488
Gain on sale of property and equipment												21
Identifiable Assets:
Assets	$ 45,480				$ 53,861				$ 45,480		45,480	53,861
Corporate [Member]
Depreciation and Amortization:
Depreciation and Amortization											447	406
Capital Expenditures
Capital Expenditures											$ 9,279	$ 826