Note 7. Fair Value - Recurring Fair Value Measurments (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Jun. 30, 2013
Recurring Fair Value Measurements:
Derivative Asset	$ 174	$ 298
Derivative Liability	1,637	1,662
Fair Value, Measurements, Recurring
Recurring Fair Value Measurements:
Cash Equivalents	90,723	83,516
Trading Securities: Mutual funds held by nonqualified supplemental employee retirement plan	20,422	19,600
Total assets at fair value	111,319	103,414
Total liabilities at fair value	1,637	1,662
Fair Value, Measurements, Recurring | Foreign Exchange Contract
Recurring Fair Value Measurements:
Derivative Asset	145	273
Derivative Liability	1,637	1,662
Fair Value, Measurements, Recurring | Stock Warrant
Recurring Fair Value Measurements:
Derivative Asset	29	25
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Recurring Fair Value Measurements:
Cash Equivalents	90,723	83,516
Trading Securities: Mutual funds held by nonqualified supplemental employee retirement plan	20,422	19,600
Total assets at fair value	111,145	103,116
Total liabilities at fair value	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Foreign Exchange Contract
Recurring Fair Value Measurements:
Derivative Asset
Derivative Liability
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Stock Warrant
Recurring Fair Value Measurements:
Derivative Asset
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Recurring Fair Value Measurements:
Cash Equivalents
Trading Securities: Mutual funds held by nonqualified supplemental employee retirement plan
Total assets at fair value	145	273
Total liabilities at fair value	1,637	1,662
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Foreign Exchange Contract
Recurring Fair Value Measurements:
Derivative Asset	145	273
Derivative Liability	1,637	1,662
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Stock Warrant
Recurring Fair Value Measurements:
Derivative Asset
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Recurring Fair Value Measurements:
Cash Equivalents
Trading Securities: Mutual funds held by nonqualified supplemental employee retirement plan
Total assets at fair value	29	25
Total liabilities at fair value	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Foreign Exchange Contract
Recurring Fair Value Measurements:
Derivative Asset
Derivative Liability
Other Assets, Long Term | Not Designated as Hedging Instrument | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Stock Warrant
Recurring Fair Value Measurements:
Derivative Asset	$ 29	$ 25