BUSINESS SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Mar. 28, 2020	Dec. 28, 2019	Mar. 30, 2019	Dec. 29, 2018	Mar. 28, 2020	Mar. 30, 2019	Sep. 28, 2019
Operating Revenues:
Operating revenues	$ 30,128		$ 29,736		$ 61,069	$ 57,630
Income from Operations Reconciled to Income After Income Taxes and Net Income Attributable to Noncontrolling Interests
Income before corporate expenses	2,552		2,718		4,670	4,272
Corporate expenses, net of other revenues	(1,035)		(828)		(1,922)	(1,727)
Income from Operations	1,517		1,890		2,748	2,545
Interest expense	(198)		(181)		(402)	(366)
Interest and other income	13		13		25	26
Insurance recovery, net of casualty loss						602
Income Before Provision for Income Taxes	1,332		1,722		2,371	2,807
Provision for (Benefit From) Income Taxes	88		(257)		(30)	(344)
Net Income	1,420	$ 921	1,465	$ 998	2,341	2,463
Net Income Attributable to Noncontrolling Interests	(772)		(444)		(1,199)	(699)
Net Income Attributable to Flanigan's Enterprises, Inc. stockholders	648		1,021		1,142	1,764
Depreciation and Amortization:
Depreciation and amortization	815		744		1,632	1,464
Capital Expenditures:
Capital expenditures	707		2,558		1,640	4,199
Identifiable Assets:
Assets	100,774				100,774		$ 68,755
Restaurants [Member]
Operating Revenues:
Operating revenues	23,528		23,964		48,161	46,115
Income from Operations Reconciled to Income After Income Taxes and Net Income Attributable to Noncontrolling Interests
Income before corporate expenses	1,962		2,435		3,697	3,822
Depreciation and Amortization:
Depreciation and amortization	629		578		1,264	1,135
Capital Expenditures:
Capital expenditures	433		1,010		1,134	2,351
Identifiable Assets:
Assets	54,365				54,365		31,077
Package stores [Member]
Operating Revenues:
Operating revenues	6,027		5,092		11,734	10,227
Income from Operations Reconciled to Income After Income Taxes and Net Income Attributable to Noncontrolling Interests
Income before corporate expenses	590		283		973	450
Depreciation and Amortization:
Depreciation and amortization	90		69		174	135
Capital Expenditures:
Capital expenditures	54		87		157	165
Identifiable Assets:
Assets	14,369				14,369		10,540
Other [Member]
Operating Revenues:
Operating revenues	573		680		1,174	1,288
Corporate [Member]
Depreciation and Amortization:
Depreciation and amortization	96		97		194	194
Capital Expenditures:
Capital expenditures	220		1,461		349	1,683
Identifiable Assets:
Assets	32,040				32,040		27,138
Total segments [Member]
Depreciation and Amortization:
Depreciation and amortization	719		647		1,438	1,270
Capital Expenditures:
Capital expenditures	487		$ 1,097		1,291	$ 2,516
Identifiable Assets:
Assets	$ 68,734				$ 68,734		$ 41,617