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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | Jun. 28, 2014 | Dec. 28, 2013
--- | --- | ---
Allowance on trade accounts receivable | $ 4,442 | $ 3,773
Allowance on other receivables | 3,785 | 4,253
Accumulated depreciation and amortization on operating property | $ 160,434 | $ 157,985
Common stock, par value | $ 0.01 | $ 0.01
Common stock, authorized shares | 160,000,000 | 160,000,000
Common stock, issued shares | 67,162,401 | 67,017,858
Treasury stock, shares | 22,471,704 | 21,528,693

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