New Accounting Pronouncements (Summary of Cumulative Effect of Changes to Unaudited Consolidated Balance Sheet) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jul. 01, 2018	Jun. 30, 2018
ASSETS
Unbilled receivables	$ 6,634	$ 1,864
Inventories	11,905		$ 13,829
Other current assets	2,280		1,327
LIABILITIES AND SHAREHOLDERS' EQUITY
Deferred revenue	6,155	6,715	8,691
Long-Term Deferred Income Tax Liability	1,748		1,717
Retained earnings (deficit)	2,913		(510)
ASC 606 [Member]
ASSETS
Unbilled receivables		1,864
Inventories		12,479
Other current assets		1,376
LIABILITIES AND SHAREHOLDERS' EQUITY
Deferred revenue		6,715
Long-Term Deferred Income Tax Liability		2,207
Retained earnings (deficit)		$ 1,539
ASC 606 Adjustments [Member] \| ASC 606 [Member]
ASSETS
Unbilled receivables	(6,634)		1,864
Inventories	4,134		(1,350)
Other current assets	(251)		49
LIABILITIES AND SHAREHOLDERS' EQUITY
Deferred revenue	2,936		(1,976)
Long-Term Deferred Income Tax Liability	(1,320)		490
Retained earnings (deficit)	$ (4,486)		$ 2,049

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