Revenue from Contracts with Customers (Summary of Cumulative Effect of Changes to Unaudited Consolidated Balance Sheet) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jul. 01, 2018	Jun. 30, 2018	Sep. 30, 2017	Jun. 30, 2017
Current Assets
Cash and cash equivalents	$ 7,416		$ 5,830
Short-term investments	548		877
Receivables:
Billed receivables, net	28,509		31,797
Unbilled receivables, net	4,906	$ 1,864
Other receivables	300		346
Inventory	11,664		13,829
Other current assets	1,858		1,327
Total current assets	55,201		54,006
Property and Equipment, Net	6,827		6,613
Goodwill	7,970		7,985
Intangible Assets, Net	3,611		3,820
Long-Term Investments	725		725
Long-Term Deferred Income Tax Asset	956		1,055
Total Assets	75,290		74,204
Current Liabilities
Line of credit and short-term notes payable	122		175
Accounts payable	7,764		7,592
Accrued liabilities and expenses	4,361		4,256
Accrued compensation	2,377		3,155
Current portion of taxes payable	498		526
Income taxes payable	1,156		768
Reserves for restructuring and other charges	675		675
Deferred revenue	7,142	6,715	8,691
Total current liabilities	24,095		25,838
Long-Term Taxes Payable	324		450
Long-Term Deferred Income Tax Liability	1,728		1,717
Other Long-Term Liabilities	604		601
Total Liabilities	26,751		28,606
Shareholders' Equity
Preferred stock, no par value, authorized 1,000 shares, issued none	0		0
Common stock	96		96
Accumulated other comprehensive loss	(2,495)		(2,098)
Additional paid-in capital	48,507		48,110
Retained earnings (deficit)	2,431		(510)
Total Shareholders' Equity	48,539		45,598	$ 42,449	$ 39,835
Total Liabilities and Shareholders' Equity	75,290		74,204
ASC 606 [Member]
Receivables:
Unbilled receivables, net		1,864
Inventory		12,479
Other current assets		1,376
Current Liabilities
Deferred revenue		6,715
Long-Term Deferred Income Tax Liability		2,207
Shareholders' Equity
Retained earnings (deficit)		$ 1,539
ASC 606 Adjustments [Member] | ASC 606 [Member]
Receivables:
Unbilled receivables, net	(4,906)		1,864
Inventory	1,578		(1,350)
Other current assets	(119)		49
Total current assets	(3,447)
Total Assets	(3,447)
Current Liabilities
Deferred revenue	808		(1,976)
Total current liabilities	808
Long-Term Deferred Income Tax Liability	(277)		490
Total Liabilities	531
Shareholders' Equity
Preferred stock, no par value, authorized 1,000 shares, issued none
Accumulated other comprehensive loss	(1)
Retained earnings (deficit)	(3,977)		$ 2,049
Total Shareholders' Equity	(3,978)
Total Liabilities and Shareholders' Equity	(3,447)
Balances Without Adoption of ASC 606 [Member] | ASC 606 [Member]
Current Assets
Cash and cash equivalents	7,416
Short-term investments	548
Receivables:
Billed receivables, net	28,509
Other receivables	300
Inventory	13,242
Other current assets	1,739
Total current assets	51,754
Property and Equipment, Net	6,827
Goodwill	7,970
Intangible Assets, Net	3,611
Long-Term Investments	725
Long-Term Deferred Income Tax Asset	956
Total Assets	71,843
Current Liabilities
Line of credit and short-term notes payable	122
Accounts payable	7,764
Accrued liabilities and expenses	4,361
Accrued compensation	2,377
Current portion of taxes payable	498
Income taxes payable	1,156
Reserves for restructuring and other charges	675
Deferred revenue	7,950
Total current liabilities	24,903
Long-Term Taxes Payable	324
Long-Term Deferred Income Tax Liability	1,451
Other Long-Term Liabilities	604
Total Liabilities	27,282
Shareholders' Equity
Preferred stock, no par value, authorized 1,000 shares, issued none
Common stock	96
Accumulated other comprehensive loss	(2,496)
Additional paid-in capital	48,507
Retained earnings (deficit)	(1,546)
Total Shareholders' Equity	44,561
Total Liabilities and Shareholders' Equity	$ 71,843