Note 12. Stock Compensation Plan - Stock Compensation Plans Textuals (Details) - USD ($) $ in Millions	3 Months Ended
Sep. 30, 2017	Sep. 30, 2016
Allocated Share-based Compensation Expense	$ 1.5	$ 1.8
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	1.3	$ 0.7
Excess tax benefits from stock award vesting	$ 0.7
Minimum
Annual Performance Shares, Earned Percentage	0.00%
Relative Total Shareholder Return, Earned Percentage	0.00%
Maximum
Annual Performance Shares, Earned Percentage	200.00%
Relative Total Shareholder Return, Earned Percentage	200.00%
Annual Performance Shares
Stock Compensation, Shares Awarded	55,839
Annual Performance Shares \| Maximum
Stock Compensation, Shares Awarded	111,678
Relative Total Shareholder Return
Stock Compensation, Shares Awarded	26,167
Relative Total Shareholder Return \| Maximum
Stock Compensation, Shares Awarded	52,334

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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-Name Accounting Standards Codification
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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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