Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($) shares in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Summary of Significant Accounting Policies [Line Items]
Impairment	$ 694,000		$ 694,000
Shares excluded from the computation of diluted EPS		119	194	181
Cash and cash equivalents		$ 3,704,000	$ 6,787,000	$ 11,502,000	$ 23,070,000
Depreciation expense		$ 1,121,000	1,016,000	$ 770,000
Fair value in excess of carrying value, percent		26.00%
Goodwill impaiment loss		$ 0
Goodwill		$ 7,793,000	$ 7,500,000
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
Foreign Bank Accounts [Member]
Summary of Significant Accounting Policies [Line Items]
Cash and cash equivalents		$ 3,490,000
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] | 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
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] | 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
Weighted Average [Member]
Summary of Significant Accounting Policies [Line Items]
Amortization period		3 years 8 months 12 days
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
Building [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives		40 years
Building Improvements [Member] | Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives		10 years
Building Improvements [Member] | Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives		15 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