Employee Benefits - 2017 Omnibus Incentive Plan (Details)	12 Months Ended
	Jun. 30, 2020 USD ($) shares	Jun. 30, 2019 USD ($) shares	Jun. 30, 2018 USD ($) shares
2017 Omnibus Incentive Plan Description	The Company adopted an equity-based incentive plan in October 2017 (the 2017 Plan). Under the 2017 plan, the Company reserved for issuance 500,000 shares of common stock for awards to employees and directors, against which full value awards (stock-based awards other than stock options and stock appreciation rights) are to be counted on a 2.5-for-1 basis. The 2017 Plan authorized awards to be made to employees, officers, and directors by a committee of outside directors. The committee held the power to set vesting requirements for each award under the 2017 Plan. Under the 2017 Plan, stock awards and shares issued pursuant to exercised options may be issued from either authorized but unissued shares, or treasury shares.
common stock reserve for issuance	132,000
Exercised	10,000
Restricted Stock
Equity Incentive Plan vesting percentage	20.00%
Performance-based restricted stock
Equity Incentive Plan vesting percentage	20.00%
Omnibus Incentive Plan 2017 [Member]
common stock reserve for issuance	500,000
Full value awards basis	2.5
Granted	50,500
Exercised	0
Forfeited	0
Outstanding	50,500
Unrecognized compensation cost | $	$ 335,000
Options vested	0	0	0
Full value awards issued	15,525	15,000	22,000
Full value awards vested	7,080	4,200	0
Period for recognition of compensation expense from the date of grant on pro-rata basis	5 years
Share based compensation expense | $	$ 293,000	$ 189,000	$ 60,000
Unvested compensation cost for full value awards | $	$ 1,300,000
Omnibus Incentive Plan 2017 [Member] | Restricted Stock
Equity Incentive Plan vesting percentage	20.00%
Omnibus Incentive Plan 2017 [Member] | Performance-based restricted stock
Equity Incentive Plan vesting percentage	20.00%
Achievement of specified profitability targets period	3 years