Schedule II - Valuation and Qualifying Accounts - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Allowance for Doubtful Accounts [Member]
Balance, End of Period		$ 506	$ 226	$ 317
Balance, Beginning of Period		226	317	294
Additions Charged to Costs and Expenses		339	55	220
Additions From Company Acquired		10
Deductions	[1]	(69)	(146)	(197)
Inventory Valuation Reserve [Member]
Balance, End of Period		2,815	2,394	2,197
Balance, Beginning of Period		2,394	2,197	2,298
Additions Charged to Costs and Expenses		1,495	1,726	1,493
Additions From Company Acquired		600		(417)
Deductions	[1]	(1,674)	(1,529)	(1,177)
Valuation Allowance of Deferred Tax Assets [Member]
Balance, End of Period		5,556	6,150	6,161
Balance, Beginning of Period		6,150	6,161	6,450
Additions Charged to Costs and Expenses
Additions From Company Acquired		(569)		(283)
Deductions	[1]	$ (25)	$ (11)	$ (6)

[1] For Allowance for Doubtful Accounts, deductions are uncollectible accounts charged off, less recoveries.