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Note 8 - Share-based Compensation - Stock Options, Activity (Details)	3 Months Ended
	Sep. 30, 2018 shares
Outstanding (in shares)	561,595
Granted (in shares)	25,590
Exercised (in shares)	(40,000)
Canceled (forfeited/expired) (in shares)	(91,066)
Outstanding (in shares)	456,119
Exercisable (in shares)	339,687

X

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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)(iii)
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X

- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

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X

- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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Number of share options (or share units) exercised during the current period.

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