Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2012

Equity [Abstract]

Schedule of Common Stock Reserved for Future Issurance

At December 31, 2012, shares of common stock were reserved for the following purposes:

Issuance upon conversion of the Convertible Notes (see Note 10)	11.8	million
Issuance upon exercise of stock options and other stock awards (see Note 16)	4.5	million