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Stock Based Compensation (Tables)
 12 Months Ended
Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
A summary of option plan activity under the plan is as follows:
 
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]
The following table summarizes non-vested share awards activity:
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]
The following table summarizes non-vested unit awards as of June 30, 2014, as well as activity for the year then ended:
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]
The weighted average assumptions used in this model to estimate fair value at the measurement date and resulting values are as follows:
 
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