Taxes on Income - Reconciliation of Unrecognized Tax Benefits (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 30, 2012	Jan. 01, 2012	Jan. 02, 2011
Reconciliation Of Unrecognized Tax Benefits [Line Items]
Balance at beginning of year	$ 7,736	$ 8,159	$ 9,551
Increases related to tax positions taken during the current year	18,118	693	718
Increases related to tax positions taken during the prior years	150	250	538
Decreases related to tax positions taken during the prior years	(519)	(1,237)	0
Decreases related to settlements with taxing authorities	0	0	(1,778)
Decreases related to lapse of applicable statute of limitations	(300)	0	(712)
Changes due to foreign currency translation	1	(129)	(158)
Balance at end of year	$ 25,186	$ 7,736	$ 8,159