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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Comprehensive income
Net income	$ 24,020	$ 16,721	$ 14,167
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Unrealized holding gain (loss) on investment securities available for sale, net of income taxes of $23, ($8), and ($12), respectively	85	(39)	(23)
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), ($2), and $12, respectively	(3)	(7)	22
Amount reclassified to credit loss for previously recorded market loss, net of income taxes of $3, $1, and $2, respectively	9	4	3
Accretion of OTTI on investment securities held to maturity, net of income taxes of $6, $10, and $26, respectively	25	37	49
Total other comprehensive income (loss), net of income taxes	116	(5)	51
Total comprehensive income	$ 24,136	$ 16,716	$ 14,218

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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