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OIL AND NATURAL GAS INTERESTS (Tables)
 6 Months Ended
Jun. 30, 2020
Extractive Industries [Abstract]  
Aggregate capitalized costs related to oil and natural gas production activities
Oil and natural gas interests include the following:
June 30,December 31,
20202019
(In thousands)
Oil and natural gas interests:
Subject to depletion$1,453,385  $1,316,692  
Not subject to depletion1,480,346  1,551,767  
Gross oil and natural gas interests2,933,731  2,868,459  
Accumulated depletion and impairment(373,898) (326,474) 
Oil and natural gas interests, net2,559,833  2,541,985  
Land5,688  5,688  
Property, net of accumulated depletion and impairment$2,565,521  $2,547,673