Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 28, 2012	Dec. 31, 2011
Accumulated Depreciation	$ 148,541	$ 142,657
Stockholders' Equity:
Preferred stock, $1 par value	$ 1	$ 1
Preferred stock, 200,000 shares authorized	200,000	200,000
Preferred stock, shares issued	0	0
Common stock, $1 par value	$ 1	$ 1
Common stock, 50,000,000 shares authorized	50,000,000	50,000,000
Common stock, shares issued	26,807,272	26,495,828
Common Stock held in treasury, at cost	271,998	258,424