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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2020
Fair Value Disclosures [Abstract]  
Financial instruments that are not recorded at fair value The following table presents the fair value of financial instruments that are not recorded at fair value on a recurring basis:
December 31, 2020December 31, 2019
Fair
Value		Carrying
Value		Fair
Value		Carrying
Value
(In thousands)
Senior notes (Level 1)$570,339 $519,803 $576,875 $519,211 
Revolving credit facilities and term loans (Level 2)647,557 634,543 940,756 931,023 
Total financial instruments$1,217,896 $1,154,346 $1,517,631 $1,450,234