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Note 13. Postemployment Benefits (Tables)
 6 Months Ended
Dec. 31, 2018
Postemployment Benefits [Abstract]  
Schedule of Changes in Projected Benefit Obligations
The components of net periodic postemployment benefit cost applicable to our severance plans were as follows:
 
Three Months Ended
 
Six Months Ended
 
December 31
 
December 31
(Amounts in Thousands)
2018
 
2017
 
2018
 
2017
Service cost
$
126

 
$
131

 
$
253

 
$
266

Interest cost
24

 
21

 
47

 
42

Amortization of actuarial income
(103
)
 
(66
)
 
(202
)
 
(133
)
Net periodic benefit cost
$
47

 
$
86

 
$
98

 
$
175