Debt (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Current portion of long-term debt	$ 10,000	$ 10,000
Long-term debt	37,500	58,000
Senior Credit Facility
Debt Instrument [Line Items]
Total Senior Credit Facility	47,500	68,000
Senior Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	15,000	28,000
Senior Credit Facility | Term Loan
Debt Instrument [Line Items]
Current portion of long-term debt	10,000	10,000
Long-term debt	$ 22,500	$ 30,000