Summary of Discontinued Operations Activity (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Discontinued Operations [Line Items]
Revenue									$ 21,173	$ 22,621	$ 20,708
Income from discontinued operations before income taxes									6,673	5,120	2,477
Gain on sale of discontinued operations before income taxes									52,174
Income from discontinued operations before income taxes									58,847	5,120	2,477
Income taxes on income from discontinued operations									2,615	1,905	1,013
Income taxes on gain on sale of discontinued operations									19,145
Income from discontinued operations, net of income taxes	$ 34,381	$ 743	$ 934	$ 1,029	$ 1,122	$ 840	$ 955	$ 298	$ 37,087	$ 3,215	$ 1,464