Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 9,648	$ 8,302	$ 25,953	$ 38,731
Unrealized (losses) gains on AFS securities arising during the period, net of taxes of $804, $3,475, $(2,780), and $(6,151)	(2,412)	(10,765)	8,698	19,062
Reclassification adjustment for gross gains on AFS securities included in net income, net of taxes of $0, $0, $383, and $0	0	0	1,188	0
Unrealized gains (losses) on cash flow hedges arising during the period, net of taxes of $(244), $(1,410), $(91), and $(1,159)	829	4,369	352	3,589
Reclassification adjustment for cash flow hedge amounts included in net income, net of taxes of $502, $538, $1,670, and $1,202	1,561	1,667	5,179	3,724
Comprehensive income	$ 6,504	$ 239	$ 28,636	$ 57,658