Employee Benefit Plans - Summary of Company's Stock Option and Restricted Stock Unit Activity (Detail) (USD $)	9 Months Ended
	Sep. 26, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Available for Grant, Beginning balance	8,752,000
Shares Available for Grant, Authorized	350,000
Shares Available for Grant, Granted	(3,477,000)
Shares Available for Grant, Options exercised	0
Shares Available for Grant, Shares released	0
Shares Available for Grant, Forfeited or cancelled	1,753,000
Shares Available for Grant, Ending balance	7,378,000
Restricted Stock Units Outstanding [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Units, Beginning balance	3,018,000
Number of Shares, Authorized	0
Number of Units, Granted	1,352,000
Number of Units, exercised	0
Number of Units, Shares released	(1,589,000)
Number of Units, Forfeited or cancelled	(232,000)
Number of Units, Ending balance	2,549,000
Weighted Average Grant Date Fair Value, Beginning balance	$ 6.34
Weighted Average Grant Date Fair Value, Authorized	$ 0
Estimated weighted average fair value per share at purchase date	$ 6.55
Weighted Average Grant Date Fair Value, Exercised	$ 0
Weighted Average Grant Date Fair Value, Shares released	$ 6.32
Weighted Average Grant Date Fair Value, Forfeited or cancelled	$ 6.13
Weighted Average Grant Date Fair Value, Ending balance	$ 6.49
Stock Options Outstanding [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Beginning balance	7,885,000
Number of Shares, Authorized	0
Number of Shares, Granted	1,450,000
Number of Shares, Options exercised	(329,000)
Number of Shares, Forfeited or cancelled	(1,592,000)
Number of Shares, Ending balance	7,414,000
Weighted Average Exercise Price, Beginning balance	$ 6.92
Weighted Average Exercise Price, Authorized	$ 0
Weighted Average Exercise Price, Granted	$ 6.52
Weighted Average Exercise Price, Options exercised	$ 4.91
Weighted Average Exercise Price, Forfeited or cancelled	$ 8.15
Weighted Average Exercise Price, Ending balance	$ 6.67