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Stock-Based Compensation - Summary of Changes in Non-vested Restricted Shares (Details) - Restricted Stock	3 Months Ended
	Sep. 30, 2018 $ / shares shares
Number of Restricted Stock Units and Restricted Stock Awards Outstanding
Total Non-vested Restricted Stock Units at beginning of period (in shares) | shares	227,154
Granted (in shares) | shares	1,307
Vested (in shares) | shares	(37,734)
Forfeited (in shares) | shares	(1,600)
Total Non-vested Restricted Stock Units at end of period (in shares) | shares	189,127
Weighted Average Grant Date Fair Value
Total Non-vested Restricted Stock Units at beginning of period (in usd per share) | $ / shares	$ 20.84
Granted (in usd per share) | $ / shares	41.94
Vested (in usd per share) | $ / shares	(18.58)
Forfeited (in usd per share) | $ / shares	(22.21)
Total Non-vested Restricted Stock Units at end of period (in usd per share) | $ / shares	$ 21.43

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Grant Date Fair Value

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

+ References

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-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=109197908&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.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(3)
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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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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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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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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 equity instruments other than options outstanding, including both vested and non-vested instruments.

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