Income Taxes (Details) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Income Taxes [Abstract]
Federal statutory tax rate (in hundredths)	34.00%
Reconciliation of federal income tax attributable to operations [Abstract]
Statutory federal income tax benefit	$ (1,695,000)	$ (873,000)	$ (1,766,000)
Net operating loss with no tax benefit	1,695,000	873,000	1,766,000
Total federal income tax	0	0	0
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	expire in various years between 2013 and 2032, and 2013 and 2032, respectively.
Deferred tax assets [Abstract]
Net operating loss carryforwards	33,661,000	33,671,000
Income tax credits	1,990,000	1,953,000
Other	1,917,000	2,146,000
Total deferred taxes	37,568,000	37,770,000
Valuation allowance	(37,568,000)	(37,770,000)
Net deferred taxes	0	0
Valuation allowance increased (decreased)	(202,000)	455,000	1,950,000
Income tax benefits related to stock options deductions	1,852,000
Tax benefits related to stock options included in valuation allowance	1,624,000
Federal [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	88,515,000
Research and experimentation credit carryforwards	1,147,000
Federal [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, expiration date	Jun. 30, 2032
Federal [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, expiration date	Jun. 30, 2013
State [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	63,735,000
Research and experimentation credit carryforwards	$ 1,244,000