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Supplemental Cash Flow Information
3 Months Ended
Mar. 31, 2021
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Information Supplemental Cash Flow Information 
 Three Months Ended
 March 31,
2021
March 31,
2020
Supplemental disclosures:(in thousands)
Income taxes paid$213 $3,024 
Non-cash investing and financing activities:
Non-cash capital expenditures$264 $(1,000)