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Fair Value Measurements (Tables)
 6 Months Ended
Jun. 30, 2021
Fair Value Disclosures [Abstract]  
Fair value of financial instruments that are not recorded at fair value on recurring basis The following table presents the fair value of financial instruments that are not recorded at fair value on a recurring basis:
June 30, 2021December 31, 2020
Fair ValueCarrying ValueFair ValueCarrying Value
(In thousands)
Senior notes (Level 1)$566,633 $520,114 $570,339 $519,803 
Revolving credit facilities and term loans (Level 2)540,510 531,205 647,557 634,543 
Total debt$1,107,143 $1,051,319 $1,217,896 $1,154,346