CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012
Allowance on trade accounts receivable	$ 8,333	$ 8,650
Allowance on other receivables	4,227	4,657
Accumulated depreciation and amortization on operating property	$ 161,007	$ 158,999
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized shares	160,000,000	160,000,000
Common stock, issued shares	66,973,215	66,859,864
Treasury stock, shares	20,412,020	20,411,736