Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2021	Sep. 30, 2020
Preferred stock, par value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common Stock
Common stock, par value per share	$ 0.01	$ 0.01
Common Class A
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	39,510,430	39,428,571
Common stock, shares outstanding	39,510,430	39,428,571
Common Class B
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized	1	1
Common stock, shares issued	1	1
Common stock, shares outstanding	1	1