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Fixed Assets (Tables)
6 Months Ended
Jun. 30, 2020
Property, Plant and Equipment [Abstract]  
Schedule Of Fixed Assets
Fixed assets consisted of the following at:
 June 30,December 31,
(In thousands)20202019
Fixed assets, at cost$702,032  $678,367  
Less accumulated depreciation and amortization337,075  312,058  
Fixed assets, net$364,957  $366,309