Employee Benefit Plans - Summary of Company's Stock Option and Restricted Stock Unit Activity (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Shares Available for Grant, Beginning balance	10,155,000
Shares Available for Grant, Authorized	0
Shares Available for Grant, Granted	(3,757,000)
Shares Available for Grant, Options exercised	0
Shares Available for Grant, Shares released	0
Shares Available for Grant, Forfeited or cancelled	2,354,000
Shares Available for Grant, Ending balance	8,752,000
Stock Options Outstanding [Member]
Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Number of Shares, Beginning balance	8,900,000
Number of Shares, Authorized	0
Number of Shares, Granted	1,505,000
Number of Shares, Options exercised	(888,000)
Number of Shares, Forfeited or cancelled	(1,632,000)
Number of Shares, Ending balance	7,885,000
Weighted Average Exercise Price, Beginning balance	$ 6.83
Weighted Average Exercise Price, Authorized	$ 0.00
Weighted Average Exercise Price, Granted	$ 5.97
Weighted Average Exercise Price, Options exercised	$ 4.14
Weighted Average Exercise Price, Forfeited or cancelled	$ 7.06
Weighted Average Exercise Price, Ending balance	$ 6.92
Restricted Stock Units Outstanding [Member]
Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Number of Shares, Authorized	0
Number of Units, Beginning balance	3,938,000
Number of Units, Granted	1,501,000
Number of Units, Exercised	0
Number of Units, Shares released	(1,888,000)
Number of Units, Forfeited or cancelled	(533,000)
Number of Units, Ending balance	3,018,000
Weighted Average Grant Date Fair Value, Beginning balance	$ 6.44
Weighted Average Grant Date Fair Value, Authorized	$ 0.00
Weighted Average Grant Date Fair Value, Granted	$ 6.02
Weighted Average Grant Date Fair Value, Exercised	$ 0.00
Weighted Average Grant Date Fair Value, Shares released	$ 6.29
Weighted Average Grant Date Fair Value, Forfeited or cancelled	$ 6.38
Weighted Average Grant Date Fair Value, Ending balance	$ 6.34