Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Allowance on trade accounts receivable	$ 12,054	$ 12,121
Allowance on other receivables	14,405	10,579
Accumulated depreciation and amortization on operating property	$ 426,984	$ 393,274
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized shares	160,000,000	160,000,000
Common stock, issued shares	68,497,324	68,382,310
Treasury stock, shares	32,550,980	32,455,300