Stock Based Compensation (Schedule of Stock Option Activity) (Details) - USD ($)	9 Months Ended	12 Months Ended
Mar. 31, 2018	Jun. 30, 2017
Number of Shares Subject To Options
Balance at July 1, 2017	197,800
Granted	51,715
Exercised	(9,400)
Forfeited or expired	(4,885)
Outstanding at March 31, 2018	235,230	197,800
Vested or expected to vest at March 31, 2018	221,814
Exercisable at March 31, 2018	145,950
Weighted Average Exercise Price
Balance at July 1, 2017	$ 24.57
Granted	21.76
Exercised	21.45
Forfeited or expired	24.44
Outstanding at March 31, 2018	24.08	$ 24.57
Vested or expected to vest at March 31, 2018	24.10
Exercisable at March 31, 2018	$ 24.31
Weighted Average Remaining Contractual Term
Outstanding	6 years 2 months 19 days	5 years 10 months 10 days
Granted	9 years 6 months 14 days
Vested or expected to vest at March 31, 2018	6 years 15 days
Exercisable at March 31, 2018	4 years 5 months 1 day
Aggregate Intrinsic Value
Outstanding at March 31, 2018	$ 528,162
Vested or expected to vest at March 31, 2018	494,369
Exercisable at March 31, 2018	$ 303,756

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Weighted average remaining contractual term for option awards granted, 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 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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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. 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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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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