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Stock Compensation Plans (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Jan. 28, 2020	Jan. 27, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of options exercised during the period	$ 443	$ 947
Number of unvested stock options (shares)	178,670	158,392
Unvested stock options, aggregate grant date fair value	$ 847	$ 565
Unvested stock options, aggregate intrinsic value	538
Stock options vested during period, aggregate grant date fair value	$ 2	$ 1
Stock options vested during period (shares)	400	200
Stock options, outstanding, aggregate intrinsic value	$ 2,170	$ 2,990
Unrecognized compensation expense, non-vested options	$ 777
Unrecognized compensation expense, non-vested options, amortization period (in years)	2 years 3 months 21 days
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	300,000
Award vesting percentage	20.00%
Award vesting period (years)	5 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term	10 years
Equity Incentive Plan 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)				352,366
Number of shares available for grant (in shares)	26,696
Equity Incentive Plan 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	238,400		350,000
Equity Incentive Plan 2019 | Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)			300,000
Equity Incentive Plan 2019 | Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)			50,000

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