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Other Operating Income, Net
 6 Months Ended
Jun. 30, 2018
Other Income And Expenses [Abstract]  
Other Operating Income, Net

14.

Other operating income, net

Other operating income, net, for the quarter ended June 30, 2018 includes a net gain on legal settlements of $7,677,000 and a gain on the sale of surplus land of $16,938,000.