CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data	Jul. 02, 2011	Jan. 01, 2011
Class A [Member]
Shareholders' Equity
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	40,000	40,000
Common stock, shares issued (in shares)	18,563	18,439
Common stock, shares outstanding (in shares)	11,038	11,115
Class B [Member]
Shareholders' Equity
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	4,000	4,000
Common stock, shares issued (in shares)	1,805	1,805
Common stock, shares outstanding (in shares)	1,805	1,805