BUSINESS SEGMENTS (Details)	3 Months Ended								12 Months Ended
	Oct. 02, 2021 USD ($)	Jul. 03, 2021 USD ($)	Apr. 03, 2021 USD ($)	Jan. 02, 2021 USD ($)	Oct. 03, 2020 USD ($)	Jun. 27, 2020 USD ($)	Mar. 28, 2020 USD ($)	Dec. 28, 2019 USD ($)	Oct. 02, 2021 USD ($) item	Oct. 03, 2020 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | item									2
Operating Revenues:
Total operating revenues	$ 33,635,000	$ 37,935,000	$ 34,357,000	$ 31,380,000	$ 28,245,000	$ 23,663,000	$ 30,128,000	$ 30,941,000	$ 137,307,000	$ 112,977,000
Income from Operations	1,978,000	2,609,000	2,793,000	1,270,000	895,000	(732,000)	1,517,000	1,231,000	8,650,000	2,911,000
Interest expense									(938,000)	(836,000)
Interest and Other Income									58,000	49,000
Gain on forgiveness of PPP loans									10,136,000
Gain on sale of property and equipment									44,000
Income before provision for income taxes									17,950,000	2,124,000
Benefit (Provision) for Income Taxes									(1,185,000)	60,000
Net Income									16,765,000	2,184,000
Net income Attributable to Noncontrolling Interests									(4,981,000)	(1,074,000)
Net Income Attributable to Flanigan's Enterprises, Inc, stockholders	1,354,000	$ 7,199,000	$ 2,451,000	$ 780,000	423,000	$ (455,000)	$ 648,000	$ 494,000	11,784,000	1,110,000
Identifiable Assets:
Assets	128,002,000				112,484,000				128,002,000	112,484,000
Capital Expenditures:
Capital Expenditures									13,255,000	2,766,000
Depreciation and Amortization:
Depreciation and Amortization									3,063,000	3,240,000
Operating Segments [Member]
Operating Revenues:
Income from Operations									11,067,000	6,231,000
Identifiable Assets:
Assets	83,631,000				68,801,000				83,631,000	68,801,000
Capital Expenditures:
Capital Expenditures									12,082,000	2,094,000
Depreciation and Amortization:
Depreciation and Amortization									2,680,000	2,850,000
Operating Segments [Member] | Restaurants [Member]
Operating Revenues:
Total operating revenues									105,298,000	84,652,000
Income from Operations									9,424,000	4,532,000
Identifiable Assets:
Assets	67,978,000				55,030,000				67,978,000	55,030,000
Capital Expenditures:
Capital Expenditures									10,842,000	1,834,000
Depreciation and Amortization:
Depreciation and Amortization									2,332,000	2,495,000
Operating Segments [Member] | Package stores [Member]
Operating Revenues:
Total operating revenues									29,304,000	26,276,000
Income from Operations									1,643,000	1,699,000
Identifiable Assets:
Assets	15,653,000				13,771,000				15,653,000	13,771,000
Capital Expenditures:
Capital Expenditures									1,240,000	260,000
Depreciation and Amortization:
Depreciation and Amortization									348,000	355,000
Corporate, Non-Segment [Member]
Operating Revenues:
Total operating revenues									2,705,000	2,049,000
Income from Operations									(2,417,000)	(3,320,000)
Identifiable Assets:
Assets	$ 44,371,000				$ 43,683,000				44,371,000	43,683,000
Capital Expenditures:
Capital Expenditures									1,173,000	672,000
Depreciation and Amortization:
Depreciation and Amortization									$ 383,000	$ 390,000