Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2011	Jan. 01, 2011
Consolidated Balance Sheets [Abstract]
Net of allowances on receivables	$ 32,237	$ 36,533
Net of accumulated depreciation on property, plant and equipment	$ 1,150,304	$ 1,117,461
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000	10,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	300,000	300,000
Common stock, shares issued	88,952	88,952
Common stock, shares outstanding	88,611	88,611