Schedule of Stock Option Activity (Detail) (USD $)	12 Months Ended
Dec. 28, 2012
Shares
Outstanding - beginning of year	20,719,482
Granted	2,102,207
Exercised	(150,593)
Forfeited/expired	(5,957,941)
Outstanding - end of year	16,713,155
Exercisable - end of year	14,282,666
Shares vested or expected to vest	16,566,555
Weighted Average Exercise Price
Outstanding - beginning of year	$ 7.68
Granted	$ 3.95
Exercised	$ 0.63
Forfeited/expired	$ 7.05
Outstanding - end of year	$ 7.50
Exercisable - end of year	$ 7.96
Shares vested or expected to vest	$ 7.53
Weighted Average Remaining Contractual Term (in years)
Outstanding - end of year	3 years 7 months 6 days
Exercisable - end of year	2 years 8 months 12 days
Shares vested or expected to vest	3 years 7 months 6 days
Aggregate Intrinsic Value
Outstanding - end of period
Exercisable - end of period
Shares vested or expected to vest

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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