Note 8. Income Taxes - Reconciliation of Effective Income Tax Rate (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Income Tax Reconciliation, Income Tax Expense (Benefit), Tax Computed at U.S. Federal Statutory Rate	$ 6,196	$ 1,553	$ 2,089
Effective Income Tax Rate Reconciliation, Tax Computed at U.S. Federal Statutory Rate	35.00%	35.00%	35.00%
Income Tax Reconciliation, State Income Taxes, Net of Federal Income Tax Benefit	332	(277)	(907)
Effective Income Tax Rate Reconciliation, State Income Taxes, Net of Federal Income Tax Benefit	1.90%	(6.30%)	(15.20%)
Income Tax Reconciliation, Foreign Tax Effect	(639)	(1,213)	(3,120)
Effective Income Tax Rate Reconciliation, Foreign Tax Effect	(3.60%)	(27.30%)	(52.30%)
Income Tax Reconciliation, Tax-Exempt Interest Income	0	0	(169)
Effective Income Tax Rate Reconciliation, Tax-Exempt Interest Income	0.00%	0.00%	(2.80%)
Income Tax Reconciliation, Research Credit	(247)	(751)	(674)
Effective Income Tax Rate Reconciliation, Research Credit	(1.40%)	(16.90%)	(11.30%)
Income Tax Reconciliation, Foreign Subsidiary Land and Building Gain	0	0	(2,236)
Effective Income Tax Rate Reconciliation, Foreign Subsidiary Land and Building Gain	0.00%	0.00%	(37.50%)
Income Tax Reconciliation, Other-Net	426	203	182
Effective Income Tax Rate Reconciliation, Other-Net	2.40%	4.60%	3.10%
Total provision (benefit) for income taxes	$ 6,068	$ (485)	$ (4,835)
Effective Income Tax Rate	34.30%	(10.90%)	(81.00%)