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2. Property and Equipment (Details Narrative) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Property And Equipment        
Depreciation and amortization expense $ 694,000 $ 379,000 $ 1,830,000 $ 1,184,000