Income Taxes Deferred tax assets and liabilities (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Deferred tax assets: [Abstract]
Net operating loss carryforwards	$ 34,168	$ 34,649
Tax credit carryforwards	1,530	1,501
Inventory valuation	567	823
Depreciation / amotizaton	975	1,145
Other accruals not currently deductable for tax purposes	1,652	1,627
Capitalized research and development expenses	39	118
Other	206	75
Total deferred tax assets	39,137	39,938
Valuation allowance	(38,627)	(39,282)
Net deferred tax assets	510	656
Deferred tax liabilities: [Abstract]
Purchased intangibles	(510)	(656)
Net deferred tax liabilities	(510)	(656)
Total net deferred tax liabilities	$ 0	$ 0