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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Comprehensive income
Net income	$ 24,269	$ 24,020	$ 16,721
Other comprehensive income (loss)
Unrealized holding gain (loss) on investment securities available for sale, net of income taxes of $(1), $23, and $8, respectively	(3)	85	(39)
Change in OTTI on investment securities held to maturity, net of income taxes:
Adjustments related to other factors for which OTTI was previously recognized, net of income taxes of $(1), $(1), and $(2), respectively	(3)	(3)	(7)
Amount reclassified to credit loss for previously recorded market loss, net of income taxes of $0, $3, and $1, respectively	0	9	4
Accretion of OTTI on investment securities held to maturity, net of income taxes of $4, $6, and $10, respectively	17	25	37
Total other comprehensive income (loss), net of income taxes	11	116	(5)
Total comprehensive income	$ 24,280	$ 24,136	$ 16,716

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