Note II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Allowance for Doubtful Accounts [Member]
Balance, Beginning of Period		$ 317	$ 294	$ 346
Additions Charged to Costs and Expenses		55	220	6
Additions From Company Acquired
Deductions	[1]	(146)	(197)	(58)
Balance, End of Period		226	317	294
Inventory Valuation Reserve [Member]
Balance, Beginning of Period		2,197	2,298	3,087
Additions Charged to Costs and Expenses		1,726	1,493	1,464
Additions From Company Acquired			(417)
Deductions	[1]	(1,529)	(1,177)	(2,253)
Balance, End of Period		2,394	2,197	2,298
Valuation Allowance of Deferred Tax Assets [Member]
Balance, Beginning of Period		6,161	6,450	5,750
Additions Charged to Costs and Expenses				700
Additions From Company Acquired			(283)
Deductions	[1]	(11)	(6)
Balance, End of Period		$ 6,150	$ 6,161	$ 6,450

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