Schedule of Stock Option Activity (Detail) (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended
Sep. 28, 2012
Shares
Outstanding - beginning of year	20,719,482
Granted	2,102,207
Exercised	(138,665)
Forfeited/expired	(5,180,890)
Outstanding - end of period	17,502,134
Exercisable - end of period	14,868,901
Shares vested or expected to vest	17,305,651
Weighted Average Exercise Price
Outstanding - beginning of year	$ 7.68
Granted	$ 3.95
Exercised	$ 0.48
Forfeited/expired	$ 7.06
Outstanding - end of period	$ 7.48
Exercisable - end of period	$ 7.94
Shares vested or expected to vest	$ 7.51
Weighted Average Remaining Contractual Term (in years)
Outstanding - end of period	3 years 9 months 18 days
Exercisable - end of period	2 years 10 months 24 days
Shares vested or expected to vest	3 years 8 months 12 days
Aggregate Intrinsic Value
Outstanding - end of period	$ 0.1
Exercisable - end of period	0.1
Shares vested or expected to vest	$ 0.1

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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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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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