Schedule II Valuation and Qualifying Accounts (Details) (USD $)	12 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2010
Allowance For Doubtful Accounts [Member]
Balance at Beginning of Year	$ 233,000		$ 400,000		$ 265,000
Charged to Costs and Expenses	358,000		101,000		144,000
Charged to Other Accounts	0		0		0
Deductions	(187,000)	[1]	(268,000)	[1]	(9,000)	[1]
Balance at End of Year	404,000		233,000		400,000
Inventory Valuation Reserve [Member]
Balance at Beginning of Year	768,000		492,000		651,000
Charged to Costs and Expenses	190,000		341,000		217,000
Charged to Other Accounts	0		0		0
Deductions	(439,000)	[2]	(65,000)	[2]	(376,000)	[2]
Balance at End of Year	$ 519,000		$ 768,000		$ 492,000

[1] Accounts written-off.

[2] Scrapped inventory.