Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 22,186	$ 18,898
Unrealized gains (losses) on AFS securities arising during the period, net of taxes of $3,544 and $(409)	(10,982)	1,140
Changes in unrealized gains (losses) on cash flow hedges, net of taxes of $(1,277) and $(1,220)	3,961	3,994
Comprehensive income	$ 15,165	$ 24,032