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Stock Option Plan (Details) - Stock Option	12 Months Ended
	Jun. 30, 2017 $ / shares shares
Shares
Outstanding, June 30, 2016 | shares	1,046,040
Exercised | shares	(468,400)
Outstanding, June 30, 2017 | shares	577,640
Exercisable, June 30, 2017 | shares	577,640
Weighted- Average Exercise Price Per Share
Outstanding, June 30, 2016 | $ / shares	$ 11.83
Exercised | $ / shares	11.83
Outstanding, June 30, 2017 | $ / shares	11.83
Exercisable, June 30, 2017 | $ / shares	$ 11.83

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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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

+ References

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-Publisher FASB
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-Subparagraph (c)(1)(i)-(ii)
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+ References

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-Publisher FASB
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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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