Subsequent Events (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Subsequent Events [Abstract]

Schedule of Derivative Instruments

The components of “Cash (paid) received for commodity derivative settlements” and “Cash paid for settlements of contingent consideration arrangements, net” are as follows for the respective periods:

	Years Ended December 31,
	2020	2019	2018
	(In thousands)
Cash flows from operating activities
Cash (paid) received on oil derivatives	$98,723	($11,188)	($27,510)
Cash (paid) received on natural gas derivatives	147	7,399	238
Cash (paid) received for commodity derivative settlements	$98,870	($3,789)	($27,272)
Cash flows from investing activities
Cash paid for settlements of contingent consideration arrangements, net	($40,000)	$—	$—

Subsequent to December 31, 2020, the Company entered into the following derivative contracts:

	For the Full Year of	For the Full Year of
Oil contracts (WTI)	2021	2022
Collar contracts
Total volume (Bbls)	920,000	1,355,000
Weighted average price per Bbl
Ceiling (short call)	$60.18	$60.00
Floor (long put)	$47.50	$45.00
Short call swaption contracts 1
Total volume (Bbls)	—	1,825,000	(2)
Weighted average price per Bbl	$—	$52.18

(1)    In February 2021, the Company terminated a total of 920,000 Bbls of short call swaption contracts for the second half of 2021 and simultaneously executed the full year 2022 short call swaption contracts shown in the table above.

(2)    The short call swaption contracts shown in the table above have exercise expiration dates of December 31, 2021.

	For the Full Year of
Natural gas contracts (Henry Hub)	2022
Collar contracts (two-way collars)
Total volume (MMBtu)	1,800,000
Weighted average price per MMBtu
Ceiling (short call)	$3.88
Floor (long put)	$2.78