Summary of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Summary of Significant Accounting Policies [Line Items]
Shares excluded from the computation of diluted EPS	988,000	909,000	811,000
Cash and cash equivalents	$ 13,364,000	$ 12,984,000	$ 12,105,000	$ 9,789,000
Certificate of deposits	9,600,000
Variable rate demand note holdings	1,700,000
Repo investment	2,000,000
Advertising expense	53,000	13,000	29,000
TriCam Sensors [Member]
Summary of Significant Accounting Policies [Line Items]
Standard Product Warranty Period	3 years
ScanWorks [Member]
Summary of Significant Accounting Policies [Line Items]
Standard Product Warranty Period	1 year
WheelWorks [Member]
Summary of Significant Accounting Policies [Line Items]
Standard Product Warranty Period	2 years
Foreign Bank Accounts [Member]
Summary of Significant Accounting Policies [Line Items]
Cash and cash equivalents	$ 6,300,000
Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Delivery time of multi-element order, months	3 months
Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Delivery time of multi-element order, months	15 months
Building [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives	40 years
Machinery and Equipment [Member] | Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives	3 years
Machinery and Equipment [Member] | Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives	15 years
Furniture and Fixtures [Member] | Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives	15 years