Subsequent Events (Details) - Subsequent Event $ in Millions	Jan. 04, 2021 USD ($) state restaurant	Sep. 30, 2025 restaurant	Sep. 30, 2024 restaurant	Sep. 30, 2023 restaurant	Sep. 30, 2022 restaurant	Sep. 30, 2021 restaurant
Subsequent Event [Line Items]
Area Development Agreement Cost | $	$ 3.0
Area Development Agreement, Number Of States | state	16
Area Development Agreement, Number Of States With Limited Counties | state	4
Area Development Agreement, Number Of Restaurants To Be Acquired	500
Area Development Agreement, Prepaid Franchise Fees | $	$ 0.6
Area Development Agreement, Restaurants To Be Opened, Built, And Operated	50
Area Development Agreement, Percentage Of New Restaurants To Be In Kentucky, Tennessee And Indiana	80.00%
Scenario, Forecast
Subsequent Event [Line Items]
Area Development Agreement, Restaurants To Be Opened, Built, And Operated		12	12	12	10	4