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Stock-Based Compensation - Restricted Stock Units Incentive Plan (Details) - Restricted Stock - $ / shares	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Total Units (in shares)	227,154	225,854	140,908
Units Granted (in shares)	107,321	102,738	168,227
Units Vested (in shares)	(103,811)	(99,613)	(81,181)
Units Forfeited (in shares)	(4,424)	(1,825)	(2,100)
Total Units (in shares)	226,240	227,154	225,854
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Total Units, Weighted Average Value (in dollars per share)	$ 20.84	$ 15.77	$ 16.17
Share-based compensation, incentive stock awards, weighted average grant date fair value (in dollars per share)	41.63	30.80	15.55
Units Vested, weighted average value (in dollars per share)	22.98	19.57	15.95
Units forfeited, weighted average fair value (in dollars per share)	25.00	22.58	18.52
Total Units, Weighted Average Value (in dollars per share)	$ 29.64	$ 20.84	$ 15.77

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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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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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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 shares under non-option equity instrument agreements that were cancelled as a result of occurrence of a terminating event.

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

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