Stock Repurchase Program (Details) - USD ($)	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
1995 Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount	$ 2,000,000
2021 Stock Repurchase Program B [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount	45,500,000
Stock Repurchase Program, Additional Authorized Amount	$ 43,360,247
Stock Repurchased and Retired During Period, Shares (in shares)	0	0
Estate of Former Chairman [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount	$ 2,000,000