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GOODWILL (Tables)
12 Months Ended
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill by Business Segment
The carrying amount of goodwill attributable to each reportable business segment with changes therein was as follows:
FMSSCSDTSTotal
 (In thousands)
Balance at January 1, 2019$243,606 $190,792 $40,808 $475,206 
Foreign currency translation adjustment96 (277)— (181)
Balance at December 31, 2019243,702 190,515 40,808 475,025 
Foreign currency translation adjustment 103 117  220 
Balance at December 31, 2020 (1)
$243,805 $190,632 $40,808 $475,245 
_______________
(1)Accumulated impairment losses were $26 million and $19 million for FMS and SCS, respectively, as of both December 31, 2020 and 2019