Supplemental Disclosures to the Balance Sheets and Statements of Cash Flows (Tables)

12 Months Ended

Dec. 31, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Other Current Assets

Other current assets reported on the consolidated balance sheets included the following:

	Year Ended December 31,
	2020		2019
	(in thousands)
Prepaid expenses	$	3,592	$	4,577
Materials and supplies	11,666		10,544
Oil inventories	3,490		3,432
Other	652		846
Total other current assets	$	19,400	$	19,399

Schedule of Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses on the consolidated balance sheets included the following:

	Year Ended December 31,
	2020		2019
	(in thousands)
Accounts payable-trade	$	11,055	$	13,986
Accrued expenses	43,452		57,078
Royalties payable	15,150		25,385
Greenhouse gas liability - current portion	35,554		—
Taxes other than income tax liability	10,118		9,150
Accrued interest	10,783		10,500
Dividends payable	—		9,888
Asset retirement obligation - current portion	25,000		25,208
Other	873		616
Total accounts payable and accrued expenses	$	151,985	$	151,811

Supplemental Cash Flow Information

Supplemental disclosures to the consolidated statements of cash flows are presented below:

	Year Ended December 31,
	2020		2019		2018
	(in thousands)
Supplemental Disclosures of Significant Non-Cash Operating Activities:
Greenhouse gas liability - reclassification from long-term to current liability	$	33,376	$	—	$	—
Supplemental Disclosures of Significant Non-Cash Investing Activities:
Material inventory transfers to oil and natural gas properties	$	1,596	$	10,056	$	2,371
Supplemental Disclosures of Cash Payments (Receipts):
Interest, net of amounts capitalized	$	29,962	$	30,720	$	19,761
Income taxes payments (refunds)	$	222	$	(2)	$	(1,901)
Reorganization items, net	$	—	$	—	$	832

The following table provides a reconciliation of cash, cash equivalents and restricted cash as reported in the consolidated statements of cash flows to the line items within the consolidated balance sheets:

	Year Ended December 31,
	2020		2019		2018
	(in thousands)
Beginning of Period
Cash and cash equivalents	$	—	$	68,680	$	33,905
Restricted cash	—		—		34,833
Cash, cash equivalents and restricted cash	$	—	$	68,680	$	68,738
Ending of Period
Cash and cash equivalents	$	80,557	$	—	$	68,680
Restricted cash	—		—		—
Cash, cash equivalents and restricted cash	$	80,557	$	—	$	68,680