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Fixed Assets (Tables)
9 Months Ended
Sep. 30, 2020
Property, Plant and Equipment [Abstract]  
Schedule Of Fixed Assets
Fixed assets consisted of the following at:
 September 30,December 31,
(In thousands)20202019
Fixed assets, at cost$719,007 $678,367 
Less accumulated depreciation and amortization350,585 312,058 
Fixed assets, net$368,422 $366,309