Employee Benefit Plans (Tables)

6 Months Ended

Jun. 29, 2012

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs

Components of net periodic pension cost for the Company’s defined and multiemployer pension plans were as follows:

	Three months ended												Six months ended
	June 29, 2012						July 1, 2011						June 29, 2012						July 1, 2011
	U.S. Plan			UK Plan			U.S. Plan			UK Plan			U.S. Plan			UK Plan			U.S. Plan			UK Plan
	(in thousands)												(in thousands)
Components of net periodic pension cost
Service cost	$	19		$	—		$	10		$	—		$	38		$	—		$	20		$	—
Interest cost	128			599			128			591			256			1,180			256			1,185
Expected return on assets	(144		)	(424		)	(140		)	(459		)	(288		)	(836		)	(280		)	(920		)
Recognized actuarial net loss	62			23			21			—			124			46			21			—
Total Company defined benefit plan expense	65			198			19			132			130			390			17			265
Multiemployer benefit expense	298			—			317			—			576			—			573			—
Multiemployer pension withdrawal penalty	—			—			1,200			—			—			—			1,200			—
Net periodic pension cost	$	363		$	198		$	1,536		$	132		$	706		$	390		$	1,790		$	265