Commitments and Contingencies (Details) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Operating Leases [Abstract]
Renewal period under operating lease	5 years
Annual future minimum lease payments for non-cancelable operating lease [Abstract]
2013	$ 373,000
2014	387,000
2015	397,000
2016	410,000
2017	140,000
Total	1,707,000
Rent expense	470,000	691,000	760,000
Warranty [Abstract]
Period of warranty on products	1 year
Schedule of changes in product liability included in accrued liabilities [Roll Forward]
Beginning balance	608,000	1,113,000
Warranties issued during the period	282,000	261,000
Settlements made during the period	(471,000)	(815,000)
Changes in liability for pre-existing warranties during the period, including expirations	128,000	49,000
Ending balance	$ 547,000	$ 608,000	$ 1,113,000