Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 18,382	$ 9,648	$ 49,212	$ 25,953
Unrealized (losses) gains on AFS securities arising during the period, net of taxes of $(734), $804, $856, and $(2,780)	2,303	(2,412)	(2,689)	8,698
Reclassification adjustment for gross gains on AFS securities included in net income, net of taxes of $0, $0, $0, and $383	0	0	0	1,188
Unrealized gains (losses) on cash flow hedges arising during the period, net of taxes of $110, $(244), $(421), and $(91)	(345)	829	1,324	352
Reclassification adjustment for cash flow hedge amounts included in net income, net of taxes of $177, $502, $576, and $1,670	557	1,561	1,809	5,179
Comprehensive income	$ 19,783	$ 6,504	$ 46,038	$ 28,636