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Share-based Compensation - Employee Share Purchase Plan (Details) - Employee Stock [Member] - USD ($)	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Nov. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Duration of offering periods for ESPP (in months)	24 months
Percent of compensation allowed for purchase of options	15.00%
Payroll deduction accumulation period (in months)	6 months
Grant price, percent of fair value of common stock at date of grant	85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number Of Shares Authorized For Purchase Per Purchase Date	200,000
Shares authorized under plan (in shares)				1,430,000
Weighted-average grant date fair value	$ 3.84	$ 5.81	$ 6.11
Fair Value Assumptions For ESPP
Expected option life (in years)	1 year 3 months 18 days	1 year 3 months 18 days	1 year 3 months 18 days
Dividend yield	0.00%	0.00%	0.00%
Minimum
Fair Value Assumptions For ESPP
Volatility rate	40.10%	42.10%	39.10%
Risk-free interest rate	2.10%	1.40%	0.60%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of common shares that may be purchased on any purchase date (in shares)	875
Maximum number of common shares that may be purchased per a 24-month offering period (in shares)	3,500
Maximum value of common stock that may be purchased in any one calendar year	$ 25,000
Fair Value Assumptions For ESPP
Volatility rate	40.70%	45.30%	44.70%
Risk-free interest rate	2.90%	2.60%	1.30%

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The weighted average fair value at grant date for nonvested equity-based awards issued 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 estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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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 highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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Number of shares authorized for issuance under share-based payment arrangement.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Purchase price of common stock expressed as a percentage of its fair value.

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