Income Taxes Deferred tax assets and liabilities (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Deferred tax assets: [Abstract]
Net operating loss carryforwards	$ 36,872	$ 34,168
Tax credit carryforwards	1,994	1,530
Inventory valuation	700	567
Depreciation / amotizaton	523	975
Other accruals not currently deductable for tax purposes	1,341	1,652
Capitalized research and development expenses	0	39
Other	85	206
Total deferred tax assets	41,515	39,137
Valuation allowance	(41,087)	(38,627)
Net deferred tax assets	428	510
Deferred tax liabilities: [Abstract]
Purchased intangibles	(316)	(510)
Net deferred tax liabilities	(316)	(510)
Total net deferred tax liabilities	$ 112	$ 0