Accumulated Other Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 24, 2012		Jun. 26, 2011	Jun. 24, 2012		Jun. 26, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss) beginning balance	$ 2,060		$ 2,122	$ 1,849	[1]	$ 849
Current period other comprehensive income (loss)	(451)		(514)	(240)		759
Accumulated other comprehensive income (loss) ending balance	1,609		1,608	1,609		1,608
Defined pension plan beginning balance	(29)			(29)
Current period other comprehensive income (loss)
Defined pension plan ending balance	(29)			(29)
Interest rate swaps beginning balance	(74)			6		(159)
Current period other comprehensive income (loss)	(6)	[2]		(86)	[2]	159	[2]
Interest rate swaps ending balance	(80)			(80)
Foreign currency beginning balance	2,163		2,122	1,872		1,008
Current period other comprehensive income (loss)	(445)		(514)	(154)		600
Foreign currency ending balance	$ 1,718		$ 1,608	$ 1,718		$ 1,608

[1] The balance sheet at December 25, 2011 has been derived from the audited consolidated financial statements at that date, but does not include all information and footnotes required by accounting principles generally accepted in the United States for a complete set of financial statements.

[2] Current period other comprehensive income (loss) is shown net of tax of $3 for the three months ended June 24, 2012 (none in the same period of 2011) and $89 and $51 for the six months ended June 26, 2011 and June 24, 2012, respectively.