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Note 10. Share Owners' Equity (Details) - USD ($)	3 Months Ended	23 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Aug. 23, 2017	Sep. 29, 2016	Oct. 21, 2015
Stock Repurchase Program, Authorized Amount	$ 60,000,000	$ 60,000,000
Treasury Stock Acquired, Average Cost Per Share	$ 19.07	$ 13.32
Treasury Stock
Treasury Stock, Value, Acquired, Cost Method	$ 3,300,000	$ 38,400,000
Share Repurchase Program October 2015
Stock Repurchase Program, Authorized Amount					$ 20,000,000
Share Repurchase Program September 2016 Extension
Stock Repurchase Program, Authorized Amount				$ 20,000,000
Share Repurchase Program August 2017 Extension
Stock Repurchase Program, Authorized Amount			$ 20,000,000

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Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
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