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Stock Based Compensation (Tables) | 12 Months Ended
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Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
| Number of Shares |  | Weighted Average Exercise Price |  | Aggregate Intrinsic Value
Outstanding July 1, 2011 | 990 |  |  | $ | 15.65 |  |  |
Granted | — |  |  | — |  |  |
Forfeited | — |  |  | — |  |  |
Exercised | (526 | ) |  | 15.17 |  |  |
Outstanding July 1, 2012 | 464 |  |  | 16.19 |  |  |
Granted | — |  |  | — |  |  |
Forfeited | — |  |  | — |  |  |
Exercised | (320 | ) |  | 13.68 |  |  |
Outstanding July 1, 2013 | 144 |  |  | 21.79 |  |  |
Granted | — |  |  | — |  |  |
Forfeited | — |  |  | — |  |  |
Exercised | (19 | ) |  | 18.42 |  |  |
Outstanding June 30, 2014 | 125 |  |  | $ | 22.29 |  |  | $ | 4,633 |
Vested June 30, 2014 | 125 |  |  | $ | 22.29 |  |  | $ | 4,633 |
Exercisable June 30, 2014 | 125 |  |  | $ | 22.29 |  |  | $ | 4,633 |
Schedule of Nonvested Restricted Stock Activity [Table Text Block] |
Share awards | Shares |  | Weighted Average Grant Date Fair Value
Outstanding July 1, 2011 | 416 |  |  | $ | 22.34 |
Granted | 42 |  |  | 31.50 |
Vested | (106 | ) |  | 22.92 |
Forfeited | (20 | ) |  | 25.49 |
Outstanding July 1, 2012 | 332 |  |  | 23.13 |
Granted | 53 |  |  | 36.78 |
Vested | (125 | ) |  | 23.17 |
Forfeited | (8 | ) |  | 23.11 |
Outstanding July 1, 2013 | 252 |  |  | 25.92 |
Granted | 30 |  |  | 54.13 |
Vested | (143 | ) |  | 24.41 |
Forfeited | (1 | ) |  | 22.17 |
Outstanding June 30, 2014 | 138 |  |  | $ | 33.56 |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
Unit awards | Shares |  | Weighted Average Grant Date Fair Value
Outstanding July 1, 2011 | 293 |  |  | $ | 15.77 |
Granted | 391 |  |  | 19.69 |
Vested | — |  |  | — |
Forfeited | (12 | ) |  | 15.77 |
Outstanding July 1, 2012 | 672 |  |  | 18.05 |
Granted | 174 |  |  | 42.39 |
Vested | — |  |  | — |
Forfeited | (32 | ) |  | 22.45 |
Outstanding July 1, 2013 | 814 |  |  | 23.08 |
Granted | 164 |  |  | 48.21 |
Vested | (168 | ) |  | 15.77 |
Forfeited | (101 | ) |  | 15.77 |
Outstanding June 30, 2014 | 709 |  |  | $ | 31.66 |
ScheduleOfShareBasedPaymentAwardRSUValuationAssumptionsTableTextBlock [Table Text Block] |
| Year Ended June 30,
| 2014 |  | 2013 |  | 2012
Volatility | 21.6 | % |  | 23.3 | % |  | 34.2 | %
Risk free interest rate | 0.91 | % |  | 0.33 | % |  | 0.31 | %
Dividend yield | 1.6 | % |  | 1.2 | % |  | 1.5 | %
Stock Beta | 0.837 |  |  | 0.864 |  |  | 0.903 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock 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) -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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