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Note 10 - Share-based Compensation (Tables) | 12 Months Ended
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Jun. 30, 2016
Notes Tables |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Volatility |  |  | 48.1 | % |  |  | 52.9 | % |  |  | 56.3 | %
Risk-free rate of return |  |  | 1.93 | % |  |  | 2.03 | % |  |  | 1.52 | %
Dividend yield |  |  | 1.95 | % |  |  | 2.09 | % |  |  | 1.55 | %
Expected average life (years) |  |  | 6.3 |  |  |  | 6.7 |  |  |  | 5.2 |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Weighted |  |  |  |  |
|  |  |  |  |  | Weighted |  |  | Average |  |  |  |  |
|  |  |  |  |  | Average |  |  | Remaining |  |  |  |  |
|  |  |  |  |  | Exercise |  |  | Contractual |  |  | Aggregate |
Options |  | Shares |  |  | Price |  |  | Term (yrs) |  |  | Intrinsic Value |
Outstanding - June 30, 2015 |  |  | 994,888 |  |  | $ | 24.33 |  |  |  |  |  |  |  |  |
Granted |  |  | 24,367 |  |  |  | 28.73 |  |  |  |  |  |  |  |  |
Exercised |  |  | (36,958 | ) |  |  | 19.87 |  |  |  |  |  |  |  |  |
Canceled (forfeited/expired) |  |  | (75,224 | ) |  |  | 30.85 |  |  |  |  |  |  |  |  |
Outstanding - June 30, 2016 |  |  | 907,073 |  |  |  | 24.08 |  |  |  | 5.1 |  |  | $ | 8,308,141 |
Exercisable - June 30, 2016 |  |  | 553,371 |  |  | $ | 22.93 |  |  |  | 3.1 |  |  | $ | 5,778,995 |
Schedule of Nonvested Share Activity [Table Text Block] |
|  |  |  |  |  | Weighted Average |
|  |  |  |  |  | Grant Date |
Options |  | Shares |  |  | Fair Value |
Nonvested June 30, 2015 |  |  | 454,574 |  |  | $ | 10.49 |
Granted |  |  | 24,367 |  |  |  | 11.53 |
Vested |  |  | (96,191 | ) |  |  | 7.59 |
Canceled (forfeited/expired) |  |  | (29,048 | ) |  |  | 11.33 |
Nonvested at June 30, 2016 |  |  | 353,702 |  |  | $ | 11.28 |
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] |
|  |  |  |  |  | Average |
|  |  |  |  |  | Grant Date |
Restricted Awards |  | Shares |  |  | Fair Value |
Nonvested - June 30, 2015 |  |  | 21,000 |  |  | $ | 13.61 |
Granted |  |  | - |  |  |  |  |
Vested |  |  | (21,000 | ) |  | $ | 13.61 |
Canceled (forfeited/expired) |  |  | - |  |  |  |  |
Nonvested - June 30, 2016 |  |  | - |  |  | $ | - |
Schedule of Share-based Payment Award, Restricted Stock Units, Valuation Assumptions [Table Text Block] |
|  | 2016 |
Volatility |  |  | 33.3 | %
Risk-free rate of return |  |  | 0.77 | %
Dividend yield |  |  | 1.99 | %
Expected average life (years) |  |  | 1.75 |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] |
|  |  |  |  |  | Weighted |
|  |  |  |  |  | Average |
|  |  |  |  |  | Grant Date |
|  | Units |  |  | Fair Value |
Non-vested units at June 30, 2015 |  |  | 126,000 |  |  | $ | 24.67 |
Granted |  |  | 92,050 |  |  |  | 24.34 |
Vested |  |  | - |  |  |  | - |
Canceled (forfeited/expired) |  |  | - |  |  |  | - |
Non-vested units at June 30, 2016 |  |  | 218,050 |  |  |  | 24.53 |

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of restricted stock units, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References No definition available. + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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