Summary of Significant Accounting Policies - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Total Revenues	$ 67,245	$ 37,259	$ 124,495	$ 60,273
Oil and natural gas sales, net
Disaggregation of Revenue [Line Items]
Total Revenues	66,645	36,659	123,295	59,073
Oil
Disaggregation of Revenue [Line Items]
Total Revenues	62,376	30,784	112,999	52,891
Natural Gas
Disaggregation of Revenue [Line Items]
Total Revenues	1,789	4,516	4,494	4,635
Natural gas liquids
Disaggregation of Revenue [Line Items]
Total Revenues	$ 2,480	$ 1,359	$ 5,802	$ 1,547