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Stock Based Compensation (Tables)
 9 Months Ended
Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share-based Compensation, Stock Options, Activity [Table Text Block]
A summary of option plan activity under these plans is as follows:
 
Number of Shares
 
Weighted Average Exercise Price
 
Aggregate
 Intrinsic
 Value
Outstanding July 1, 2017
72

 
$
50.04

 
 
Granted
—

 
—

 
 
Forfeited
—

 
—

 
 
Exercised
(10
)
 
17.45

 
 
Outstanding March 31, 2018
62

 
$
55.32

 
$
4,048

Vested and Expected to Vest March 31, 2018
62

 
$
55.32

 
$
4,048

Exercisable March 31, 2018
30

 
$
21.58

 
$
2,981
Schedule of Nonvested Restricted Stock Activity [Table Text Block]
The following table summarizes non-vested share awards as of March 31, 2018, as well as activity for the nine months then ended:
Share awards
Shares
 
Weighted
Average
Grant Date
Fair Value
Outstanding July 1, 2017
36

 
$
73.66

Granted
—

 
—

Vested
(11
)
 
58.30

Forfeited
(1
)
 
64.60

Outstanding March 31, 2018
24

 
$
80.54
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
The following table summarizes non-vested unit awards as of March 31, 2018, as well as activity for the nine months then ended:
Unit awards
Units
 
Weighted
Average
Grant Date
Fair Value
 
Aggregate Intrinsic Value
Outstanding July 1, 2017
386

 
$
67.84

 
 
Granted
115

 
96.46

 
 
Vested
(155
)
 
56.87

 
 
Forfeited
(4
)
 
80.81

 
 
Outstanding March 31, 2018
342

 
$
82.28

 
$
41,322
ScheduleOfShareBasedPaymentAwardRSUValuationAssumptionsTableTextBlock [Table Text Block]
The weighted average assumptions used in this model to estimate fair value at the measurement date and resulting values for 81 unit awards granted in fiscal 2018 are as follows:
Volatility
15.60
%
Risk free interest rate
1.55
%
Dividend yield
1.20
%
Stock Beta
0.687