Business Combinations (Schedule of Proforma Revenue and Net Income) (Details) - USD ($)	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Revenues	$ 54,416,000	$ 42,744,000	[1]
Net income	619,000	(147,000)	[1]
Net income (loss) attributable to Good Times Restaurants, Inc.	159,000	(636,000)	[1]
Net income (loss) attributable to common shareholders	$ 159,000	$ (695,000)	[1]
Basic and diluted income (loss) per share	$ 0.01	$ (0.07)	[1]
Acquisition-related Costs [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Net income		$ 648,000

[1] Net income during the fiscal year ended September 30, 2014 includes acquisition related costs of $648,000