Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2023
Class Of Stock [Line Items]
Treasury stock (in shares)	694,414		660,063
Repurchase of common stock (in shares)	34,351	38,990
Payment for repurchase of common stock	$ 862	$ 988
Treasury stock market share price (in usd per share)	$ 25.09	$ 25.35
Series E Convertible Preferred Stock
Class Of Stock [Line Items]
Preferred stock, shares issued (in shares)	47,840		47,840