Employee Benefit Plans (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Defined Benefit Plan Disclosure [Line Items]
Expenses related to defined contribution retirement plan	$ 800,000	$ 700,000	$ 900,000
Maximum percentage of equity portfolio investable in one issuer for equity investments	10.00%
Maximum percentage of equity portfolio investable in one industry for equity investments	20.00%
Maximum percentage of total portfolio investable in one issuer	5.00%
Maximum percentage of outstanding shares of issuer allowed	5.00%
Employer contribution to defined benefit pension plans	3,797,000	1,674,000
Defined benefit pension plans additional voluntary contribution	1,500,000
Defined benefit pension plans additional voluntary contribution, total	4,000,000
Domestic Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.21%	5.36%	5.88%
Long-term rate of return on assets assumption	7.80%	7.80%	7.80%
Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contribution in 2012	6,000,000
Minimum required contributions in 2012	3,500,000
Additional voluntary contribution in 2012	$ 2,500,000