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Note 7. Employee Benefit Plans - Severance Plans - Components and Changes of Benefit Obligation (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Changes and Components of Benefit Obligation:      
Benefit obligation at beginning of year $ 1,495 $ 1,560  
Service cost 327 267 $ 230
Interest cost 50 37 50
Actuarial (gain) loss for the period (638) 6  
Benefits paid (8) (375)  
Remeasurement of liabilities at spin-off 751 0  
Benefit obligation at end of year 1,977 1,495 $ 1,560
Balance in current liabilities 347 262  
Balance in noncurrent liabilities 1,630 1,233  
Total benefit obligation recognized in the Consolidated Balance Sheets $ 1,977 $ 1,495