Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2015	Jun. 30, 2012
Summary of Significant Accounting Policies [Line Items]
Shares excluded from the computation of diluted EPS			196,000	988,000
Cash and cash equivalents	$ 11,502,000	$ 11,502,000	$ 23,070,000	$ 13,364,000		$ 12,984,000
Short-term investments	4,134,000	4,134,000	10,822,000
Depreciation expense		770,000	726,000	660,000
Goodwill	7,499,000	7,499,000			$ 11,658,000
Goodwill transfered to intangible assets	5,849,000
Goodwill foreign currency adjustment	(144,000)
Goodwill increase related to deferred income taxes	1,834,000
Advertising expense		158,000	35,000	$ 53,000
Restricted Cash	238,000	$ 238,000	520,000
Measurement Solutions Labor And Related Travel [Member]
Summary of Significant Accounting Policies [Line Items]
Standard product warranty period		1 year
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	8,000,000	$ 8,000,000
Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Delivery time of multi-element order, months		3 months
Accounts receivable maturity period		30 days
Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Delivery time of multi-element order, months		15 months
Accounts receivable maturity period		60 days
Weighted Average [Member]
Summary of Significant Accounting Policies [Line Items]
Amortization period		6 years 6 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
Mutual Funds [Member]
Summary of Significant Accounting Policies [Line Items]
Short-term investments	34,000	$ 34,000	96,000
Bank Time Deposits [Member]
Summary of Significant Accounting Policies [Line Items]
Short-term investments	$ 4,100,000	$ 4,100,000	9,165,000
Variable Rate Demand Obligation [Member]
Summary of Significant Accounting Policies [Line Items]
Short-term investments			1,325,000
Repurchase Agreements [Member]
Summary of Significant Accounting Policies [Line Items]
Short-term investments			$ 236,000
Customer/Distributor Relationships [Member]
Summary of Significant Accounting Policies [Line Items]
Amortization period		5 years
Trade Name [Member]
Summary of Significant Accounting Policies [Line Items]
Amortization period		10 years
Software [Member]
Summary of Significant Accounting Policies [Line Items]
Amortization period		5 years