Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation Tax Benefit (Details)

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Income Taxes - Reconciliation Tax Benefit (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]    
U.S. federal income tax rate (as a percent) 35.00%  
The expense or benefit for income taxes differs from the amount computed by applying the U.S. federal income tax rate of 35% to income or loss before income taxes as follows for the years ended:    
U.S. federal income tax expense\(benefit) at statutory rates $ 3,999 $ 7,197
Permanent differences 2   
State income tax expense\(benefit), net of federal impact 1,048 1,848
Other (6) 40
Change in valuation allowance      
Income tax expense (benefit) $ 5,043 $ 9,085