Dividends - Additional Information (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 24, 2013	Mar. 25, 2012	Dec. 30, 2012
Dividends Payable [Line Items]
Dividends declared per share	$ 0.20	$ 3.00
Dividends payable	$ 12,546		$ 1,502	[1]
Additional | Subsequent Event
Dividends Payable [Line Items]
Dividends declared per share	$ 0.20
Record date of dividend	Jun. 14, 2013
Dividend payable date	Jun. 28, 2013
Restricted Stock
Dividends Payable [Line Items]
Dividends payable	$ 200

[1] The balance sheet at December 30, 2012 has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.