Accumulated Other Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 23, 2012		Sep. 25, 2011		Sep. 23, 2012		Sep. 25, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency beginning balance	$ 1,718		$ 1,608		$ 1,872		$ 1,008
Current period other comprehensive income (loss)	1,256		(160)		1,102		440
Foreign currency ending balance	2,974		1,448		2,974		1,448
Interest rate swaps beginning balance	(80)				6		(159)
Current period other comprehensive income (loss)	(9)	[1]	(93)	[1]	(95)	[1]	66	[1]
Interest rate swaps ending balance	(89)		(93)		(89)		(93)
Defined pension plan beginning balance	(29)				(29)
Current period other comprehensive income (loss)
Defined pension plan ending balance	(29)				(29)
As Restated [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss) beginning balance	1,609		1,608		1,849		849
Current period other comprehensive income (loss)	1,247		(253)		1,007		506
Accumulated other comprehensive income (loss) ending balance	$ 2,856		$ 1,355		$ 2,856		$ 1,355

[1] Current period other comprehensive income (loss) is shown net of tax of ($54) and ($6) for the three months ended September 25, 2011 and September 23, 2012, respectively, and $35 and ($56) for the nine months ended September 25, 2011 and September 23, 2012, respectively.