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Schedule of Effective Income Tax Rate Reconciliation (Details)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Tax Disclosure [Abstract]      
Federal tax at statutory rate 34.00% 34.00% 34.00%
State income tax rate 5.83% 5.83% 5.83%
Losses and credits not benefited (38.85%) (38.49%) (39.44%)
Goodwill impairment         
Provision for taxes 0.98% 1.34% 0.39%