Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Treasury Stock, Common [Member]	Common Stock Outstanding [Member]	Additional Paid-in Capital [Member]	Noncontrolling Interest [Member]	Retained Earnings [Member]	Total
BALANCES (in shares) at Sep. 27, 2022	692,798	12,274,351
BALANCES at Sep. 27, 2022	$ (2,634)	$ 13	$ 59,427	$ 1,303	$ (30,321)	$ 27,788
Stock-based compensation cost	$ 0	$ 0	46	0	0	46
Treasury Shares Purchased (in shares)	371,395	(371,395)
Treasury Shares Purchased	$ (873)	$ 0	0	0	0	(873)
Income	0	0	0	222	0	222
Distributions	0	0	0	(172)	0	(172)
Net loss attributable to Good Times Restaurants Inc and comprehensive income	$ 0	$ 0	0	0	(127)	(127)
Restricted stock unit vesting (in shares)	0	8,284
Restricted stock unit vesting	$ 0	$ 0	(92)	0	0	(92)
Stock option exercise (in shares)	0	2,000
Stock option exercise	$ 0	$ 0	5	0	0	5
Contributions	$ 0	$ 0	0	13	0	13
BALANCES (in shares) at Dec. 27, 2022	1,064,193	11,913,240
BALANCES at Dec. 27, 2022	$ (3,507)	$ 13	59,386	1,366	(30,448)	26,810
BALANCES (in shares) at Sep. 27, 2022	692,798	12,274,351
BALANCES at Sep. 27, 2022	$ (2,634)	$ 13	59,427	1,303	(30,321)	27,788
Income						344
Net loss attributable to Good Times Restaurants Inc and comprehensive income						10,494
BALANCES (in shares) at Mar. 28, 2023	1,231,083	11,746,350
BALANCES at Mar. 28, 2023	$ (3,974)	$ 13	56,754	363	(19,827)	33,329
BALANCES (in shares) at Dec. 27, 2022	1,064,193	11,913,240
BALANCES at Dec. 27, 2022	$ (3,507)	$ 13	59,386	1,366	(30,448)	26,810
Stock-based compensation cost	$ 0	$ 0	43	0	0	43
Treasury Shares Purchased (in shares)	166,890	(166,890)
Treasury Shares Purchased	$ (467)	$ 0	0	0	0	(467)
Income	0	0	0	122	0	122
Distributions	0	0	0	(294)	0	(294)
Net loss attributable to Good Times Restaurants Inc and comprehensive income	0	0	0	0	10,621	10,621
Purchase of non-controlling interests	$ 0	$ 0	(2,675)	(831)	0	(3,506)
BALANCES (in shares) at Mar. 28, 2023	1,231,083	11,746,350
BALANCES at Mar. 28, 2023	$ (3,974)	$ 13	56,754	363	(19,827)	33,329
BALANCES (in shares) at Sep. 26, 2023	1,530,846	11,446,587
BALANCES at Sep. 26, 2023	$ (4,908)	$ 13	56,701	423	(19,235)	32,994
Stock-based compensation cost	$ 0	$ 0	38	0	0	38
Treasury Shares Purchased (in shares)	160,772	(160,772)
Treasury Shares Purchased	$ (438)	$ 0	0	0	0	(438)
Income	0	0	0	73	0	73
Distributions	0	0	0	(29)	0	(29)
Net loss attributable to Good Times Restaurants Inc and comprehensive income	$ 0	$ 0	0	0	(556)	(556)
BALANCES (in shares) at Dec. 26, 2023	1,691,618	11,285,815
BALANCES at Dec. 26, 2023	$ (5,346)	$ 13	56,739	467	(19,791)	32,082
BALANCES (in shares) at Sep. 26, 2023	1,530,846	11,446,587
BALANCES at Sep. 26, 2023	$ (4,908)	$ 13	56,701	423	(19,235)	32,994
Income						135
Net loss attributable to Good Times Restaurants Inc and comprehensive income						62
BALANCES (in shares) at Mar. 26, 2024	1,944,114	11,033,319
BALANCES at Mar. 26, 2024	$ (5,992)	$ 13	56,779	508	(19,173)	32,135
BALANCES (in shares) at Dec. 26, 2023	1,691,618	11,285,815
BALANCES at Dec. 26, 2023	$ (5,346)	$ 13	56,739	467	(19,791)	32,082
Stock-based compensation cost	$ 0	$ 0	40	0	0	40
Treasury Shares Purchased (in shares)	252,496	(252,496)
Treasury Shares Purchased	$ (646)	$ 0	0	0	0	(646)
Income	0	0	0	62	0	62
Distributions	0	0	0	(21)	0	(21)
Net loss attributable to Good Times Restaurants Inc and comprehensive income	$ 0	$ 0	0	0	618	618
BALANCES (in shares) at Mar. 26, 2024	1,944,114	11,033,319
BALANCES at Mar. 26, 2024	$ (5,992)	$ 13	$ 56,779	$ 508	$ (19,173)	$ 32,135