Employee Benefit Plans (Tables)

3 Months Ended

Mar. 30, 2013

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs [Text Block]

The components of the net periodic benefit costs for these plans are as follows:

	Quarter Ended
	March 30, 2013			March 31, 2012
Components of net periodic benefit costs:
Service cost	$	532		$	516
Interest cost	2,026			2,201
Expected return on plan assets	(1,629		)	(1,509		)
Amortization of unrecognized net loss	1,157			951
Amortization of prior service cost	11			11
Net periodic benefit costs	$	2,097		$	2,170