Summary of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Summary of Significant Accounting Policies [Line Items]
Shares excluded from the computation of diluted EPS	909,000	811,000	960,000
Cash and cash equivalents	$ 12,984,000	$ 12,105,000	$ 9,789,000	$ 22,654,000
Certificate of deposits	6,600,000
Variable rate demand note holdings	2,600,000
Repo investment	2,000,000
Preferred stock investments not registered under Securities Act of 1933	2,200,000
Advertising expense	13,000	29,000	56,000
Foreign Bank Accounts [Member]
Summary of Significant Accounting Policies [Line Items]
Cash and cash equivalents	$ 6,925,000
Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Delivery time of multi-element order, months	15
Property, plant and equipment, estimated useful lives	P13Y
Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Delivery time of multi-element order, months	3
Property, plant and equipment, estimated useful lives	P3Y
Building [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives	P40Y