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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Statement of Financial Position [Abstract]
Investments securities held to maturity, estimated fair value	$ 115,199	$ 70,109
Allowance for loan losses	$ 13,468	$ 13,469
Preferred stock par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock shares authorized (shares)	1,000,000	1,000,000
Preferred stock shares issued (shares)	0	0
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock shares authorized (shares)	50,000,000	50,000,000
Common stock shares issued (shares)	8,348,821	8,355,469
Common stock shares outstanding (shares)	8,348,821	8,355,469

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Face amount or stated value per share of common stock.

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