Shareholders' Equity (Deficit) (Tables)

12 Months Ended

Dec. 31, 2012

Equity [Abstract]

Schedule of information relating to common stock activity

The following table sets forth information relating to common stock activity for 2012 and 2011:

Balance, December 31, 2010	73,120,357
Stock options exercised	765,693
Balance, December 31, 2011	73,886,050
Stock options exercised	1,679,359
Balance, December 31, 2012	75,565,409