Share-Based Compensation - Restricted Shares (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares outstanding beginning period (in shares)	109,000	277,000	231,000
Shares granted (in shares)	37,000	190,000	156,000
Shares vested (in shares)	(56,000)	(355,000)	(88,000)
Shares forfeited (in shares)	0	(3,000)	(22,000)
Shares outstanding ending period (in shares)	90,000	109,000	277,000
Vested shares (in shares)	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted average grant date fair value, beginning period (dollars per share)	$ 5.43	$ 4.98	$ 6.24
Weighted average grant date fair value, granted (dollars per share)	11.59	4.57	5.81
Weighted average grant date fair value, vested and issued (dollars per share)	5.55	4.62	8.31
Weighted average grant date fair value, forfeited (dollars per share)	0	5.22	10.70
Weighted average grant date fair value, ending period (dollars per share)	7.87	5.43	4.98
Weighted average granted date fair value, vested shares (dollars per share)	$ 0	$ 0	$ 0
Fair value of vested awards	$ 0.7	$ 1.6	$ 0.7
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares granted (in shares)	347,000	0	0
Shares vested (in shares)	0
Shares forfeited (in shares)	(7,000)
Shares outstanding ending period (in shares)	340,000
Vested shares (in shares)	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted average grant date fair value, granted (dollars per share)	$ 13.81
Weighted average grant date fair value, vested and issued (dollars per share)	0
Weighted average grant date fair value, forfeited (dollars per share)	13.51
Weighted average grant date fair value, ending period (dollars per share)	13.81
Weighted average granted date fair value, vested shares (dollars per share)	$ 0	$ 0

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
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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.

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-Publisher FASB
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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).

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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 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.

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- Definition

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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No definition available.

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

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

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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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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 exercise price, at which grantee can acquire shares reserved for issuance, for 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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