Employee Benefit Plans (Detail) (USD $)	12 Months Ended
	Dec. 25, 2011	Dec. 26, 2010	Dec. 27, 2009
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
401(k) Plan employer matching contribution, percentage	1.50%		2.10%
Costs of 401(k) Plan	$ 550,000	$ 0	$ 800,000
Deferred compensation plan assets, noncurrent	11,400,000	12,500,000
United Kingdom Subsidiary [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of pension plan participants	20
Pension expense	268,000	258,000	260,000
As Restated [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Deferred compensation liability classified, noncurrent	$ 10,793,000	$ 10,478,000