Oil and Natural Gas Properties (Tables)

12 Months Ended

Sep. 30, 2021

Extractive Industries [Abstract]

Schedule of Oil and Gas Properties

Oil and natural gas properties are summarized below:

	Year Ended September 30,
	2021		2020
	(In thousands)
Proved	$	402,165	$	326,420
Unproved	20,557		32,084
Work-in-progress	11,411		15,398
	434,133		373,902
Accumulated depletion and amortization	(88,336)		(63,176)
Total oil and natural gas properties, net	$	345,797	$	310,726