The Company and Summary of Significant Accounting Policies The Company and significant accounting policies - Convertible preferred stock (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Conversion of Stock, Amount Converted	$ (53,356,000)
Convertible Preferred Stock, Nonredeemable or Redeemable, Issuer Option, Value		53,000,000
Preferred Stock, Liquidation Preference, Value		$ 53,600,000