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REVENUE FROM CONTRACTS WITH CUSTOMERS
 9 Months Ended
Sep. 30, 2020
Revenue from Contract with Customer [Abstract]  
REVENUE FROM CONTRACTS WITH CUSTOMERS REVENUE FROM CONTRACTS WITH CUSTOMERS
Royalty income represents the right to receive revenues from oil, natural gas and natural gas liquids sales obtained by the operator of the wells in which the Partnership owns a royalty interest. Royalty income is recognized at the point control of the product is transferred to the purchaser at the wellhead or at the gas processing facility based on the Partnership’s percentage ownership share of the revenue, net of any deductions for gathering and transportation. Virtually all of the pricing provisions in the Partnership’s contracts are tied to a market index.

The following table disaggregates the Partnership’s total royalty income by product type:

Three Months Ended September 30,Nine Months Ended September 30,
2020201920202019
(In thousands)
Oil income$53,595 $64,829 $153,412 $182,679 
Natural gas income3,331 2,181 4,909 4,946 
Natural gas liquids income5,658 4,070 13,536 14,325 
Total royalty income$62,584 $71,080 $171,857 $201,950