Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
STOCKHOLDERS’ EQUITY
Investment securities held to maturity, fair value	$ 30,236	$ 31,425
Preferred stock, shares authorized (in shares)	3,000,000	3,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Treasury stock (in shares)	3,769	41,980
Common stock, $0.01 par value; 90,000,000 shares authorized, 24,851,122 and 26,225,563 shares issued, 24,847,353 and 26,183,583 shares outstanding at September 30, 2024 and 2023, respectively
STOCKHOLDERS’ EQUITY
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	90,000,000	90,000,000
Common stock, shares issued (in shares)	24,851,122	26,225,563
Common stock, shares outstanding (in shares)	24,847,353	26,183,583
Common stock, Nonvoting, $0.01 par value; 3,000,000 shares authorized, no shares issued, none outstanding at September 30, 2024 and 2023, respectively
STOCKHOLDERS’ EQUITY
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	3,000,000	3,000,000
Common stock, shares issued (in shares)	0	0
Common stock, shares outstanding (in shares)	0	0