Note 9. Postemployment Benefits (Details) - USD ($)	3 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2015
Components of Net Periodic Benefit Cost (before tax):
Defined Benefit Plan, Assets for Plan Benefits	$ 0		$ 0
Service cost	86,000	$ 64,000
Interest cost	14,000	8,000
Amortization of prior service costs	28,000	10,000
Amortization of actuarial (gain) loss	(63,000)	(4,000)
Net periodic benefit cost	$ 65,000	$ 78,000