Summary of Significant Accounting Policies (Details) - USD ($)		12 Months Ended
	Apr. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net proceeds from issuance of common stock		$ 0	$ 11,345,571
Payments Of Initial Capitalization			100,000
Cost of the reorganization and the issuing of the common stock, deferred			$ 1,649,899
Consecutive period for pension plan employee average monthly pay		5 years
Number of years of employment		10 years
TEB MHC
Shares of common stock sold	1,309,547
Price per share	$ 10.00
Percentage of outstanding shares issued	49.90%
Gross proceeds from issuance	$ 13,100,000
Net proceeds from issuance of common stock	11,400,000
Payments Of Initial Capitalization	$ 100,000
Number of shares held by mutual holding company	1,314,796
Percentage of outstanding shares held by mutual holding company	50.10%
Cost of the reorganization and the issuing of the common stock, deferred	$ 1,649,899