Employee Benefits - 2017 Omnibus Incentive Plan (Details)	12 Months Ended
Jun. 30, 2021 USD ($) shares	Jun. 30, 2020 USD ($) shares	Jun. 30, 2019 USD ($) shares
Common stock reserve for issuance	132,000
Exercised	0	10,000	0
Restricted Stock
Equity Incentive Plan vesting percentage	20.00%
Performance-based restricted stock
Equity Incentive Plan vesting percentage	20.00%
the 2017 Plan
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	500,000
Full value awards basis	2.5
Granted	79,500
Exercised	0
Forfeited	0
Outstanding	79,500
Unrecognized compensation cost \| $	$ 489,000
Options vested		0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value \| $	728,000
Stock Option Plan Intrinsic Value of Options Vested \| $	$ 87,000
Options Exercisable, Number	0
Full value awards issued	18,925	15,525	15,000
Full value awards vested	9,770	7,080	4,200
Period for recognition of compensation expense from date of grant on pro rata basis	5 years
Share based compensation expense \| $	$ 351,000	$ 293,000	$ 189,000
Unvested compensation cost for full value awards \| $	$ 1,500,000
the 2017 Plan \| Restricted Stock
Equity Incentive Plan vesting percentage	20.00%
the 2017 Plan \| Performance-based restricted stock
Equity Incentive Plan vesting percentage	20.00%
Achievement of specified profitability targets period	3 years

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Full value awards issued on pro rata basis on a share based compensation arrangement.

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Represents the monetary amount of Stock Option Plan Intrinsic Value of Options Vested, during the indicated time period.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate number of common shares reserved for future issuance.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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