Stock Options - Plan Information (Details) - USD ($)	1 Months Ended				3 Months Ended
	Dec. 31, 2022	May 31, 2020	Dec. 31, 2018	Dec. 31, 2012	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Stock Options
Stock-based compensation expense, allocated					$ 371,000	$ 307,000
Basic earnings per share from share based compensation costs					$ 0.01	$ 0.01
Diluted earnings per share from share based compensation costs					$ 0.01	$ 0.01
Proceeds from stock option exercises					$ 54,000
2012 Employee Stock Option Plan
Stock Options
Shares authorized (in shares)				1,900,000
Threshold percentage of voting rights				10.00%
Premium on fair market value (as a percent)				110.00%
Term				10 years
Vesting rights percentage				20.00%
Outstanding (in shares)					361,036	521,580	363,036	521,580
Exercisable, end of period					198,060	258,328
Available for grant (in shares)					0
Granted					0	0
Exercised					2,000	0
Proceeds from stock option exercises					$ 54,000
Deferred tax benefit					0	$ 0
Unearned stock based compensation					$ 885,000
Vested					9,100	10,700
Fair Value					$ 112,000	$ 124,000
2012 Employee Stock Option Plan | Options granted after December 2022
Stock Options
Granted					0
2012 Non-Employee Stock Option Plan
Stock Options
Shares authorized (in shares)				100,000
Term				10 years
Vesting rights percentage				20.00%
Outstanding (in shares)					20,400	20,400	20,400	20,400
Exercisable, end of period					16,560	13,920
Available for grant (in shares)					0
Exercised					0	0
Proceeds from stock option exercises					$ 0	$ 0
Deferred tax benefit					0	$ 0
Unearned stock based compensation					$ 19,000
Vested					0	0
2018 Non-Employee Stock Option Plan
Stock Options
Shares authorized (in shares)			100,000
Term			10 years
Vesting rights percentage			20.00%
Outstanding (in shares)					64,900	75,000	68,900	75,000
Exercisable, end of period					59,500	50,720
Available for grant (in shares)					4,000
Granted					0	0
Exercised					0	0
Proceeds from stock option exercises					$ 0	$ 0
Deferred tax benefit					0	$ 0
Unearned stock based compensation					$ 27,000
Vested					0
2018 Non-Employee Stock Option Plan | Options granted after December 2028
Stock Options
Granted					0
2020 Non-Employee Stock Option Plan
Stock Options
Shares authorized (in shares)		100,000
Term		10 years
Vesting rights percentage		20.00%
Outstanding (in shares)					51,900	56,900	56,900	56,900
Exercisable, end of period					34,140	25,760
Available for grant (in shares)					45,100
Granted					0	0
Exercised					3,000	0
Number of Stock options settled by withholding of shares					3,000
Shares withheld					2,151
Deferred tax benefit					$ 7,000	$ 0
Unearned stock based compensation					$ 163,000
Vested					7,000	7,000
Fair Value					$ 79,000	$ 79,000
2020 Non-Employee Stock Option Plan | Options granted after May 2030
Stock Options
Granted					0
2022 Employee Stock Option Plan
Stock Options
Shares authorized (in shares)	950,000
Threshold percentage of voting rights	10.00%
Premium on fair market value (as a percent)	110.00%
Term	10 years
Vesting rights percentage	20.00%
Outstanding (in shares)					130,000			5,000
Exercisable, end of period					26,000
Available for grant (in shares)					820,000
Granted					0	0
Exercised					0	0
Proceeds from stock option exercises					$ 0	$ 0
Deferred tax benefit					0	$ 0
Unearned stock based compensation					$ 1,955,000
Vested					0	0
2022 Employee Stock Option Plan | Options granted after December 2032
Stock Options
Granted					0