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Note 13 - Stock-Based Compensation and Purchase Plans (Details) - Summary of Awards Activity Under the Executive Compensation Program - USD ($)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Annual Component [Member]
Note 13 - Stock-Based Compensation and Purchase Plans (Details) - Summary of Awards Activity Under the Executive Compensation Program [Line Items]
Non-vested, June 30	43,549	52,432
Non-vested, June 30 (in Dollars per share)	$ 41.70	$ 29.91
Non-vested, June 30 (in Dollars)	$ 794,828	$ 1,360,566
Granted	14,650
Granted (in Dollars per share)	$ 55.76
Vested	(21,298)
Vested (in Dollars per share)	$ 23.00
Vested (in Dollars)	$ 1,089,126
Forfeited	(2,235)
Forfeited (in Dollars per share)	$ 35.53
Performance Stock Units [Member]
Note 13 - Stock-Based Compensation and Purchase Plans (Details) - Summary of Awards Activity Under the Executive Compensation Program [Line Items]
Non-vested, June 30	28,450	40,366
Non-vested, June 30 (in Dollars)	$ 1,873,626	$ 2,156,759
Granted	31,199
Vested	(24,137)
Vested (in Dollars)	$ 1,459,558
Forfeited	(18,978)

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The intrinsic value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units, as calculated by applying the disclosed pricing methodology.

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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)



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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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-Publisher FASB



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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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Intrinsic value of equity-based compensation awards vested. Excludes stock and unit options.

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