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Note 9 - Share-based Compensation and Other Benefit Plans (Tables) | 12 Months Ended
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Jun. 30, 2015
Notes Tables |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Avg. Contractual Life (Yrs.) |  | Aggregate Intrinsic Value
Outstanding at June 30, 2012 |  |  | 575 |  |  | $ | 65.78 |  |  |  |  |  |
Granted |  |  | 175 |  |  |  | 67.80 |  |  |  |  |  |
Exercised |  |  | (22 | ) |  |  | 51.17 |  |  |  |  |  |
Outstanding at June 30, 2013 |  |  | 728 |  |  |  | 66.70 |  |  |  |  |  |
Granted |  |  | 251 |  |  |  | 80.88 |  |  |  |  |  |
Forfeited |  |  | (26 | ) |  |  | 76.23 |  |  |  |  |  |
Exercised |  |  | (142 | ) |  |  | 59.07 |  |  |  |  |  |
Outstanding at June 30, 2014 |  |  | 811 |  |  |  | 72.11 |  |  |  |  |  |
Granted |  |  | 600 |  |  |  | 93.98 |  |  |  |  |  |
Forfeited |  |  | (133 | ) |  |  | 92.85 |  |  |  |  |  |
Exercised |  |  | (141 | ) |  |  | 69.31 |  |  |  |  |  |
Outstanding at June 30, 2015 |  |  | 1,137 |  |  | $ | 81.57 |  |  |  | 5.4 |  | $19.2 million
Exercisable at June 30: |  |  |  |  |  |  |  |  |  |  |  |  |
2013 |  |  | 497 |  |  | $ | 65.04 |  |  |  |  |  |
2014 |  |  | 534 |  |  |  | 69.49 |  |  |  |  |  |
2015 |  |  | 547 |  |  |  | 72.72 |  |  |  | 5.0 |  | $14.1 million
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Year Ended June 30, |
|  | 2015 |  | 20 14 |  | 20 13
Dividend yield |  |  | 1.3% |  |  |  | 1.5% |  |  |  | 1.8% |
Expected volatility |  | 18% | - | 21% |  | 18% | - | 22% |  | 18% | - | 23%
Risk-free interest rates |  | 1.3% | - | 2.2% |  | 1.4% | - | 2.1% |  | 0.4% | - | 1.4%
Expected lives (years) |  |  | 5 |  |  |  | 6 |  |  |  | 5 |

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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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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, 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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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