Amount of deferred tax benefit attributable to unrecognized share-based compensation.

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The number of shares subject to option or award in a single fiscal year as outlined in the plan contract.

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The percentage of the total number of shares subject to options or awards granted in a single fiscal year; this will take effect only if the percentage is less than a specified amount in the plan contract.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested options awarded to employees as compensation.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Net number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Stock Based Compensation (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended	9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 36,205	$ 40,245		$ 86,675	$ 93,293
Deferred tax benefit related to stock based compensation	2,034	$ 3,769		4,805	$ 7,893
Unrecognized compensation costs	153,718			$ 153,718
Period in which compensation cost will be recognized				2 years
Deferred tax benefit related to unrecognized compensation costs	$ 8,738			$ 8,738
Granted				51,715
Outstanding	235,230			235,230		197,800
Cash divided paid				$ 0.75	$ 0.75
Total intrinsic values of the options exercised				$ 23,437	$ 20,769
2017 Plan [Member] \| Stock Option Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			2 years
Expiration period			10 years
Authorized shares under plan			400,000
Granted	51,715
2017 Plan [Member] \| Non employee directors [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized shares under plan			133,000
Percentage of total number of shares subject to options or awards, single fiscal year			33.33%
Number of shares subject to option or award, single fiscal year			13,300
2017 Plan [Member] \| Individual Employee [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares subject to option or award, single fiscal year			15,000
2007 Plan [Member] \| Stock Option Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding	185,400			185,400
Vested and exercisable shares	145,950			145,950