Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data	Oct. 02, 2011	Jan. 02, 2011	Oct. 03, 2010
Current Assets:
Allowance for doubtful accounts	$ 1,555	$ 1,300	$ 1,261
Common Stock
Equity:
Common stock, par value	$ 1.00	$ 1.00	$ 1.00
Common stock, shares authorized	30,000,000	30,000,000	30,000,000
Common stock, shares issued	10,203,821	10,203,821	10,203,821
Less-Treasury stock, at cost:
Treasury stock, shares	3,062,374	3,062,374	3,062,374
Class B Common Stock
Equity:
Common stock, par value	$ 1.00	$ 1.00	$ 1.00
Common stock, shares authorized	10,000,000	10,000,000	10,000,000
Common stock, shares issued	2,694,636	2,672,316	2,672,316
Less-Treasury stock, at cost:
Treasury stock, shares	628,114	628,114	628,114