Stock-Based Compensation (Detail Textual) - USD ($) $ in Millions	6 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation related to restricted stock units	$ 14.5	$ 12.0
2016 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for grants	1,200,000
Cumulative equity instruments awarded	855,895
Cumulative equity instruments forfeited	174,418
PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period to establish average share price for performance measurement	90 days
Average share price performance condition, percentage	100.00%
Maximum earned award, percentage of target award	200.00%
Percentage of earned award vesting after three years	50.00%
Percentage of earned award vesting after four years	50.00%
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 58.0
Weighted-average period to recognize unrecognized compensation cost (in years)	2 years 9 months 18 days

Represents information about average share price determination period.

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- Definition

Average share price performance condition, percentage by which the average share price of the Company’s stock in years one, two and three exceeds the average share price at the grant date.

+ References

No definition available.

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- Definition

Cumulative equity instruments awarded.

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Cumulative equity instruments forfeited.

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- Definition

Maximum earned award percentage of target award.

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Service vesting condition which stipulates that 50 percent of the earned award will vest after four years.

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No definition available.

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- Definition

Service vesting condition which stipulates that 50 percent of the earned award will vest after three years.

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No definition available.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for 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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- Definition

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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- Definition

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

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