Stock Benefit Plans - Schedule of RSU Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Service-based RSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance, Shares	2,002,006	2,667,527
Granted, Shares	959,740	1,042,354
Vested, Shares	(1,018,624)	(1,638,840)
Forfeited, Shares	(146,366)	(69,035)
Ending balance, Shares	1,796,756	2,002,006	2,667,527
Beginning balance, Weighted Average Grant Date Fair Value	$ 9.06	$ 4.33
Granted, Weighted Average Grant Date Fair Value	15.57	13.96
Vested, Weighted Average Grant Date Fair Value	8.66	4.35
Forfeited, Weighted Average Grant Date Fair Value	12.86	8.68
Ending balance, Weighted Average Grant Date Fair Value	$ 12.37	$ 9.06	$ 4.33
Weighted Average Remaining Contractual Life (In years)	1 year 1 month 9 days	1 year 1 month 6 days	10 months 9 days
Aggregate Intrinsic Value, Outstanding	$ 18,794	$ 31,732	$ 33,878
Market-based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance, Shares	196,098	498,268
Granted, Shares	0	0
Vested, Shares	(107,743)	(273,941)
Forfeited, Shares	(15,387)	(28,229)
Ending balance, Shares	72,968	196,098	498,268
Beginning balance, Weighted Average Grant Date Fair Value	$ 5.00	$ 4.89
Granted, Weighted Average Grant Date Fair Value	0	0	$ 7.66
Vested, Weighted Average Grant Date Fair Value	4.48	4.86
Forfeited, Weighted Average Grant Date Fair Value	7.36	4.61
Ending balance, Weighted Average Grant Date Fair Value	$ 5.61	$ 5.00	$ 4.89
Weighted Average Remaining Contractual Life (In years)	6 months 7 days	8 months 4 days	11 months 15 days
Aggregate Intrinsic Value, Outstanding	$ 763	$ 3,108	$ 6,328
Performance-based RSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance, Shares	716,612	0
Granted, Shares	752,671	742,547
Vested, Shares	(290,929)	0
Forfeited, Shares	(80,712)	(25,935)
Ending balance, Shares	1,097,642	716,612	0
Beginning balance, Weighted Average Grant Date Fair Value	$ 15.85	$ 0
Granted, Weighted Average Grant Date Fair Value	10.46	15.85
Vested, Weighted Average Grant Date Fair Value	16.25	0
Forfeited, Weighted Average Grant Date Fair Value	13.89	15.85
Ending balance, Weighted Average Grant Date Fair Value	$ 12.37	$ 15.85	$ 0
Weighted Average Remaining Contractual Life (In years)	1 year 3 months 18 days	1 year 4 months 9 days	0 years
Aggregate Intrinsic Value, Outstanding	$ 11,481	$ 11,358

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

The number of grants made 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).

+ References

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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).

+ References

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-Publisher FASB
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-Topic 718
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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

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-Publisher FASB
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-Topic 718
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- Definition

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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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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Intrinsic value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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No definition available.

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