The amount of annual salary.

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- Definition

Amount of one-time sign-on bonus.

+ References

No definition available.

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Period over which grantee's right of grant being released under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

No definition available.

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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- Definition

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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Note 11 - Subsequent Events (Details Textual) - USD ($)				3 Months Ended
Note 11 - Subsequent Events (Details Textual) - USD ($)	Aug. 01, 2022	Jul. 28, 2022	Jul. 14, 2022	Jun. 30, 2022	Jun. 30, 2021	Aug. 02, 2022
Common Stock, Dividends, Per Share, Declared (in dollars per share)				$ 0.30	$ 0.30
Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)				10,125	1,380
Subsequent Event [Member] \| Quarterly Dividend [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share)		$ 0.30
Dividends Payable						$ 6,300,000
Chief Financial Officer [Member] \| Subsequent Event [Member]
Annual Salary			$ 375,000
One-time Sign-on Bonus			$ 50,000
Chief Financial Officer [Member] \| Subsequent Event [Member] \| 2016 Employee Equity Compensation Restricted Stock Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Grant Released From Restriction Period (Year)			3 years
Chief Financial Officer [Member] \| Subsequent Event [Member] \| Restricted Stock [Member] \| The 2016 Employee Equity Compensation Restricted Stock Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			13,000
Chief Financial Officer [Member] \| Subsequent Event [Member] \| Restricted Stock [Member] \| 2016 Employee Equity Compensation Restricted Stock Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	13,000
Chief Financial Officer [Member] \| Subsequent Event [Member] \| Performance Restricted Stock [Member] \| The 2016 Employee Equity Compensation Restricted Stock Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			3,000
Chief Financial Officer [Member] \| Subsequent Event [Member] \| Performance Restricted Stock [Member] \| 2016 Employee Equity Compensation Restricted Stock Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	3,000
Employees [Member] \| Subsequent Event [Member] \| Restricted Stock [Member] \| 2016 Employee Equity Compensation Restricted Stock Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	7,000	39,215
Independent Directors [Member] \| Subsequent Event [Member] \| Restricted Stock [Member] \| 2015 Outside Director Equity Compensation Restricted Stock Plan ("2015 Director Plan") [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		37,500