Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 28, 2019	Dec. 29, 2018
Allowance on trade accounts receivable	$ 7,296	$ 6,413
Allowance on other receivables	8,593	6,216
Accumulated depreciation and amortization on operating property	$ 274,000	$ 250,153
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized shares	160,000,000	160,000,000
Common stock, issued shares	68,072,834	67,870,926
Treasury stock, shares	28,609,926	27,755,001