Quarterly report pursuant to Section 13 or 15(d)

1. Organization and Summary of Significant Accounting Policies (Details)

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1. Organization and Summary of Significant Accounting Policies (Details)
Dec. 31, 2012
Dec. 31, 2011
Organization And Summary Of Significant Accounting Policies Details    
Options to purchase common stock 6,911 6,019
Warrants to purchase common stock 10,236 9,665
Total shares excluded from computation of basic net loss per share 17,147 15,684