Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012
Allowance on trade accounts receivable	$ 3,773	$ 8,650
Allowance on other receivables	4,253	4,657
Accumulated depreciation and amortization on operating property	$ 157,985	$ 158,999
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized shares	160,000,000	160,000,000
Common stock, issued shares	67,017,858	66,859,864
Treasury stock, shares	21,528,693	20,411,736