Note 2. Recent Accounting Pronouncements and Supplemental Information - Components of Non-operating income (expense), net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Foreign Currency Loss	$ (8)	$ (17)	$ (15)	$ (40)
Gain (Loss) on Supplemental Employee Retirement Plan Investments	29	297	396	(278)
Other	(105)	(79)	(173)	(170)
Non-operating income (expense), net	$ (84)	$ 201	$ 208	$ (488)