Operating Segments - Reconciliation of Total Reportable Segments' Operating Income to Consolidated Income (Loss) from Continuing Operations before Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income from equity method investment	$ 1,030	$ 758	$ 3,240	$ 5,285
Total operating income	58,011	53,935	119,848	152,088
Interest expense	(21,656)	(19,259)	(58,679)	(53,509)
Interest income	159	92	420	349
Income from continuing operations before taxes	36,514	34,768	61,589	98,928
Reportable Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total operating income	57,963	53,644	119,368	149,326
Eliminations [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total operating income	$ (982)	$ (467)	$ (2,760)	$ (2,523)