Accrued Expenses (Details) (USD $) In Thousands, unless otherwise specified	Sep. 29, 2012	Dec. 31, 2011
Payables and Accruals [Abstract]
Compensation and benefits	$ 4,342	$ 4,348
Provision for customer rebates, claims and allowances	4,506	4,249
Outstanding checks in excess of cash	1,805	2,728
Other	5,494	5,860
Total accrued expenses	$ 16,147	$ 17,185