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Note 9 - Stock-based Compensation - Summary of Restricted Stock (Details) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Nonvested (in shares)	298,998
The 2010 Plan [Member]
Nonvested (in shares)	198,997	102,332
Nonvested, weighted average fair value (in dollars per share)	$ 17.03	$ 4.54
Granted (in shares)	155,000	175,000
Granted, weighted average fair value (in dollars per share)	$ 19.50	$ 21.29
Vested (in shares)	(54,999)	(78,335)
Vested, weighted average fair value (in dollars per share)	$ 11.72	$ 10.22
Forfeited (in shares)
Forfeited, weighted average fair value (in dollars per share)
Nonvested (in shares)	298,998	198,997
Nonvested, weighted average fair value (in dollars per share)	$ 19.12	$ 17.03

X

- Definition

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

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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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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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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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