Revenue - Summary of Revenues Disaggregated (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues:
Total revenues	$ 72,469	$ 58,136
Oil and Natural Gas Sales [Member]
Revenues:
Total revenues	72,331	57,787
Oil [Member]
Revenues:
Total revenues	49,695	41,851
NGLs [Member]
Revenues:
Total revenues	7,670	5,122
Natural Gas [Member]
Revenues:
Total revenues	$ 14,966	$ 10,814