Note 1. Business Description and Summary of Significant Accounting Policies - Components of Non-operating income (expense), net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Foreign Currency/Derivative Gain (Loss)	$ 37	$ 336	$ (1,433)	$ (619)
Gain (loss) on supplemental employee retirement plan investments	423	26	682	(170)
Business Combination, Bargain Purchase, Gain Recognized, Amount	0	0	925	0
Other non-operating income (expense)	(87)	(128)	10	(250)
Non-operating income (expense), net	$ 373	$ 234	184	$ (1,039)
Aircom
Business Combination, Bargain Purchase, Gain Recognized, Amount			$ 925