Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details Textual)

v2.4.0.8
Income Taxes (Details Textual) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Taxes [Line Items]      
Federal and State net operating loss carryforwards $ 12,400,000    
Valuation Allowance, Deferred Tax Asset, Change in Amount 1,700,000 3,100,000 (1,300,000)
Unrecognized Tax Benefits 0 0 0
Unrecognized tax benefits or any amounts accrued for interest and penalties 0 0 0
Effective income tax rate reconciliation at Federal statutory income tax rate 34.00%    
Tax Credit Research Generated During period 340,000    
Domestic Tax Authority [Member]
      
Income Taxes [Line Items]      
Net operating loss carryforwards for tax purposes 225,600,000    
Net operating loss carryforwards 2033    
California [Member]
      
Income Taxes [Line Items]      
Net operating loss carryforwards for tax purposes 157,700,000    
Net operating loss carryforwards 2033    
Research [Member] | Domestic Tax Authority [Member]
      
Income Taxes [Line Items]      
Tax Credit Carryforward, Amount 8,200,000    
Federal research and development tax credits expire 2033    
Research [Member] | State and Local Jurisdiction [Member]
      
Income Taxes [Line Items]      
Tax Credit Carryforward, Amount $ 8,000,000