Employee Benefit Plans - Summary of Company's Stock Option and Restricted Stock Unit Activity (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Jun. 28, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Available for Grant, Beginning balance	10,155
Shares Available for Grant, Authorized
Shares Available for Grant, Granted	(3,280)
Shares Available for Grant, Options exercised
Shares Available for Grant, Shares released
Shares Available for Grant, Forfeited or cancelled	1,537
Shares Available for Grant, Ending balance	8,412
Restricted Stock Units Outstanding [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Units, Beginning balance	3,938
Number of Shares, Authorized
Number of Units, Granted	1,286
Number of Units, Shares released	(1,201)
Number of Units, Forfeited or cancelled	(268)
Number of Units, Ending balance	3,755
Weighted Average Grant Date Fair Value, Beginning balance	$ 6.44
Weighted Average Grant Date Fair Value, Authorized
Weighted Average Grant Date Fair Value, Granted	$ 5.79
Weighted Average Grant Date Fair Value, Shares released	$ 6.46
Weighted Average Grant Date Fair Value, Forfeited or cancelled	$ 6.41
Weighted Average Grant Date Fair Value, Ending balance	$ 6.29
Stock Options Outstanding [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Beginning balance	8,900
Number of Shares, Authorized
Number of Shares, Granted	1,351
Number of Shares, Options exercised	(390)
Number of Shares, Forfeited or cancelled	(1,197)
Number of Shares, Ending balance	8,664
Weighted Average Exercise Price, Beginning balance	$ 6.83
Weighted Average Exercise Price, Authorized
Weighted Average Exercise Price, Granted	$ 5.80
Weighted Average Exercise Price, Options exercised	$ 3.52
Weighted Average Exercise Price, Forfeited or cancelled	$ 6.68
Weighted Average Exercise Price, Ending balance	$ 6.84