Note 6. Employee Benefit Plans - Severance Plans - Components and Changes of Benefit Obligation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Changes and Components of Benefit Obligation [Roll Forward]
Benefit obligation	$ 5,073	$ 5,900
Service cost	811	934	854
Interest cost	189	264	408
Actuarial (gain) loss for the period	(1,265)	(1,501)
Benefits paid	(88)	(524)
Benefit obligation	4,720	5,073	5,900
Balance in current liabilities	828	890
Balance in noncurrent liabilities	3,892	4,183
Total benefit obligation recognized in the Consolidated Balance Sheets	$ 4,720	$ 5,073