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Commitment and Contingencies (Tables)
3 Months Ended
Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Loss Contingencies by Contingency
The following table summarizes information related to the location and undiscounted amount of the Company's environmental liabilities:

(In thousands)March 31
2021
December 31
2020
Current portion of environmental liabilities (a)
$6,791 $6,933 
Long-term environmental liabilities29,044 29,424 
Total environmental liabilities$35,835 $36,357 
(a)    The current portion of environmental liabilities is included in the caption Other current liabilities on the Company's Condensed Consolidated Balance Sheets.