Summary of Significant Accounting Policies - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Total Revenues	$ 88,381	$ 42,149	$ 212,876	$ 102,422
Oil and natural gas sales, net
Disaggregation of Revenue [Line Items]
Total Revenues	87,781	41,549	211,076	100,622
Oil
Disaggregation of Revenue [Line Items]
Total Revenues	82,501	39,504	195,500	92,395
Natural Gas
Disaggregation of Revenue [Line Items]
Total Revenues	2,850	957	7,344	5,592
Natural gas liquids
Disaggregation of Revenue [Line Items]
Total Revenues	$ 2,430	$ 1,088	$ 8,232	$ 2,635