Summary of Significant Accounting Policies (Narrative) (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) shares	Jun. 30, 2019 USD ($) shares	Jul. 01, 2019 USD ($)	Jun. 30, 2018 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Timing for satisfying performance obligation in contract with customer			Delivery of all performance obligations in an order will typically occur over a three to 15-month period after the order is received.
Shares excluded from the computation of diluted EPS | shares			20,000	122,000
Cash and cash equivalents		$ 4,585,000	$ 10,621,000	$ 4,585,000
Goodwill		1,700,000	0	$ 1,700,000		$ 8,000,000.0
Non-cash impairment loss related to definite-lived intangible assets	$ 500,000	$ 1,400,000
Discount rate used in annual valuation	0.185	0.160		0.160
Non-cash goodwill impairment charge	$ (1,700,000)	$ (6,000,000.0)	(1,693,000)	$ (6,020,000)
Operating lease right-of-use assets			3,668,000
Operating lease liabilities			$ 3,720,000
ASU 2016-2 [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating lease right-of-use assets					$ 4,000,000.0
Operating lease liabilities					$ 3,900,000
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
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
Other Current Assets [Member]
Summary Of Significant Accounting Policies [Line Items]
Capitalized commissions		$ 164,000	$ 338,000	164,000
Selling, General and Administrative Expenses [Member]
Summary Of Significant Accounting Policies [Line Items]
Commission expense recognized			$ 720,000	$ 969,000
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
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
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]
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
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
Foreign Bank Accounts [Member]
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents			$ 6,821,000