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Share-based Compensation - Summary of Stock Option Activities (Details) - USD ($)	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding (in shares)	886,978	1,053,367	1,859,260
Granted (in shares)	0	0	0
Exercised (in shares)	(10,500)	(166,389)	(693,393)
Canceled or forfeited (in shares)	0	0	(112,500)
Outstanding (in shares)	876,478	886,978	1,053,367	1,859,260
Options vested and expected to vest (in shares)	876,478
Exercisable (in shares)	876,478
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding (in dollars per share)	$ 10.97	$ 10.98	$ 11.37
Granted (in dollars per share)	0.00	0.00	0.00
Exercised (in dollars per share)	10.50	11.00	11.76
Canceled or forfeited (in dollars per share)	0	0	12.72
Outstanding (in dollars per share)	10.98	$ 10.97	$ 10.98	$ 11.37
Options vested and expected to vest (in dollars per share)	10.98
Exercisable (in dollars per share)	$ 10.98
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, Weighted Average Remaining Contractual Term (in years)	3 years 22 days	4 years 11 days	4 years 5 months 5 days	4 years 8 months 16 days
Options, vested and expected to vest, Weighted Average Remaining Contractual Term (in years)	3 years 22 days
Exercisable, Weighted Average Remaining Contractual Term (in years)	3 years 22 days
Aggregate Intrinsic Value	$ 43,415	$ 959,257	$ 5,681,783
Aggregate Intrinsic Value, Outstanding	758,871
Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	758,871
Exercisable, Intrinsic Value	$ 758,871

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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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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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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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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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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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Number of fully vested and expected to vest options outstanding that can 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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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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