CONDENSED BALANCE SHEETS (Parentheticals) (USD $)	Jul. 02, 2011	Dec. 31, 2010
Treasury stock, shares	4,299,434	4,166,034
Non-Voting
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized	50,000	50,000
Common stock, shares issued	0	0
Voting
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	23,209,472	23,003,285
Common stock, shares Outstanding	18,910,038	18,837,251