Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Mar. 31, 2016	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016	Jul. 01, 2018	Jul. 01, 2017	Jun. 30, 2015
Summary of Significant Accounting Policies [Line Items]
Impairment		$ 694,000
Shares excluded from the computation of diluted EPS			23,000	119,000	194,000
Cash and cash equivalents	$ 5,830,000		$ 5,830,000	$ 3,704,000	$ 6,787,000			$ 11,502,000
Impairment of goodwill	0
Goodwill	7,985,000		7,985,000	7,793,000
Impairment of intangible assets			0	0
Retained earnings	(510,000)		(510,000)	(4,226,000)
Short-term deferred income tax asset	0		0	438,000
Long-Term Deferred Income Tax Asset	1,055,000		1,055,000	9,000
Short-term deferred income tax liability	0		0	752,000
Long-Term Deferred Income Tax Liability	1,717,000		$ 1,717,000	$ 871,000
Accounting Standards Update 2015-17 [Member] | Scenario, Adjustment [Member]
Summary of Significant Accounting Policies [Line Items]
Short-term deferred income tax asset							$ (438,000)
Long-Term Deferred Income Tax Asset							438,000
Short-term deferred income tax liability							(752,000)
Long-Term Deferred Income Tax Liability							$ 752,000
Labor And Travel Related [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
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
Building [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives			40 years
Foreign Bank Accounts [Member]
Summary of Significant Accounting Policies [Line Items]
Cash and cash equivalents	$ 4,631,000		$ 4,631,000
Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Delivery time of multi-element order			3 months
Accounts receivable maturity period			30 days
Minimum [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member] | Scenario, Plan [Member]
Summary of Significant Accounting Policies [Line Items]
Retained earnings						$ 1,800,000
Minimum [Member] | In-Line And Near-Line Measurement Solutions [Member]
Summary of Significant Accounting Policies [Line Items]
Standard product warranty period			1 year
Minimum [Member] | Off-Line Measurement Solutions [Member]
Summary of Significant Accounting Policies [Line Items]
Standard product warranty period			12 months
Minimum [Member] | Machinery and Equipment [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives			3 years
Minimum [Member] | Furniture and Fixtures [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives			3 years
Minimum [Member] | Building Improvements [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives			10 years
Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Delivery time of multi-element order			15 months
Accounts receivable maturity period			60 days
Maximum [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member] | Scenario, Plan [Member]
Summary of Significant Accounting Policies [Line Items]
Retained earnings						$ 2,300,000
Maximum [Member] | In-Line And Near-Line Measurement Solutions [Member]
Summary of Significant Accounting Policies [Line Items]
Standard product warranty period			3 years
Maximum [Member] | Off-Line Measurement Solutions [Member]
Summary of Significant Accounting Policies [Line Items]
Standard product warranty period			15 months
Maximum [Member] | Machinery and Equipment [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives			15 years
Maximum [Member] | Furniture and Fixtures [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives			15 years
Maximum [Member] | Building Improvements [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives			15 years