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Miscellaneous Income, Net (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Other Income and Expenses [Abstract]      
Gains on sales of operating property and equipment $ 2,478 $ 26,093 $ 2,475
Insurance proceeds/recoveries 1,155 1,734 966
Contract settlement 817 1,600 0
Foreign currency transaction (losses) gains (459) 657 1,236
Rabbi trust investment (loss) income (3,247) 10,522 2,763
Other, net 4,643 3,639 5,628
Total $ 5,387 $ 44,245 $ 13,068