Schedule of Stock Option Activity (Detail) (USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
	Jun. 29, 2012
Shares
Outstanding - beginning of year	20,719,482
Granted	2,099,707
Exercised	(110,577)
Forfeited/expired	(1,667,813)
Outstanding - end of period	21,040,799
Exercisable - end of period	17,111,853
Shares vested or expected to vest	20,687,345
Weighted Average Exercise Price
Outstanding - beginning of year	$ 7.68
Granted	$ 3.95
Exercised	$ 0.32
Forfeited/expired	$ 8.21
Outstanding - end of period	$ 7.31
Exercisable - end of period	$ 7.86
Shares vested or expected to vest	$ 7.35
Weighted Average Remaining Contractual Term (in years)
Outstanding - end of period	3 years 9 months 18 days
Exercisable - end of period	2 years 9 months 18 days
Shares vested or expected to vest	3 years 8 months 12 days
Aggregate Intrinsic Value
Outstanding - end of period	$ 0.2
Exercisable - end of period	0.2
Shares vested or expected to vest	$ 0.2