Summary of Significant Accounting Policies (Tables)

9 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Schedule of Accounts Receivable

Accounts receivable is summarized below:

	June 30, 2021		September 30, 2020
	(In thousands)
Oil, natural gas and NGL sales	$	15,105	$	6,919
Joint interest accounts receivable	494		1,022
Realized derivative receivable	33		2,187
Other accounts receivable	41		—
Total accounts receivable	$	15,673	$	10,128

Schedule of Other Non-Current Assets

Other non-current assets consisted of the following:

	June 30, 2021		September 30, 2020
	(In thousands)
Debt issuance costs, net	$	1,519	$	1,867
Prepayments to outside operators	1,845		284
Right of use assets	409		700
Other deposits	55		98
Total other non-current assets, net	$	3,828	$	2,949

Schedule of Accrued Liabilities

Accrued liabilities consisted of the following:

	June 30, 2021		September 30, 2020
	(In thousands)
Accrued capital expenditures	$	9,271	$	2,964
Accrued lease operating expenses	2,815		1,617
Accrued ad valorem tax	352		680
Accrued general and administrative costs	2,619		2,125
Accrued interest expense	24		63
Accrued dividends on preferred units	—		903
Accrued dividends on common units and shares	38		95
Other accrued expenditures	2,029		299
Total accrued liabilities	$	17,148	$	8,746

Schedule of Asset Retirement Obligations

Components of the changes in asset retirement obligations ("ARO") for the nine months ended June 30, 2021 and year ended September 30, 2020 are shown below:

	June 30, 2021		September 30, 2020
	(In thousands)
ARO, beginning balance	$	2,326	$	1,203
Liabilities incurred	98		68
Liabilities acquired	—		1,161
Revision of estimated obligations	—		(45)
Liability settlements and disposals	(20)		(131)
Accretion	65		70
ARO, ending balance	2,469		2,326
Less: current ARO(1)	(132)		(58)
ARO, long-term	$	2,337	$	2,268

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(1)Current ARO is included within other current liabilities on the condensed consolidated balance sheets.

Disaggregation of Revenue

The following table presents oil and natural gas sales from continuing operations disaggregated by product:

	Three Months Ended June 30,				Nine Months Ended June 30,
	2021		2020		2021		2020
	(In thousands)
Oil and natural gas sales:
Oil	$	39,504	$	6,153	$	92,395	$	59,548
Natural gas	957		(738)		5,592		(1,009)
Natural gas liquids	1,088		(446)		2,635		(715)
Total oil and natural gas sales, net	$	41,549	$	4,969	$	100,622	$	57,824

Schedule of Transactions Costs

Transaction Costs

	Three Months Ended June 30,				Nine Months Ended June 30,
	2021		2020		2021		2020
	(In thousands)
Business combination acquisition costs	$	321	$	15	$	3,374	$	42
Other	—		—		160		—
Total transaction costs	$	321	$	15	$	3,534	$	42