Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details Textual)

v2.4.0.6
Income Taxes (Details Textual) (USD $)
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Operating Loss Carryforwards [Line Items]      
Effective Income Tax Rate, Continuing Operations 26.90%    
Valuation allowance $ 8,560,000   $ 8,666,000
Income Taxes (Textual) [Abstract]      
Unrecognized tax benefits 0    
(Provision for)/benefit from income taxes (4,434,000) (180,000)  
Income taxes payable 1,000,000    
State and Local Jurisdiction [Member]
      
Operating Loss Carryforwards [Line Items]      
Valuation allowance 8,560,000   8,666,000
Income Taxes (Textual) [Abstract]      
Deferred Tax Assets, Operating Loss Carryforwards 17,800,000    
Internal Revenue Service (IRS) [Member]
      
Operating Loss Carryforwards [Line Items]      
Period range when NOL carryforwards can be used 20 years    
Operating Loss Carryforwards 9,100,000    
Tax Credit Carryforward 6,400,000    
Minimum [Member]
      
Operating Loss Carryforwards [Line Items]      
Income Tax Benefit Recognized due to IRC 45L $ 2,100,000    
Minimum [Member] | State and Local Jurisdiction [Member]
      
Operating Loss Carryforwards [Line Items]      
Period range when NOL carryforwards can be used 5 years    
Maximum [Member] | State and Local Jurisdiction [Member]
      
Operating Loss Carryforwards [Line Items]      
Period range when NOL carryforwards can be used 20 years