Supplemental Cash Flow Information

3 Months Ended

Mar. 31, 2021

Supplemental Cash Flow Elements [Abstract]

Cash Flow, Supplemental Disclosures [Text Block]

	Three Months Ended March 31,
	2021		2020
	(in thousands)
Supplemental cash flow information:
Cash payments (receipts) for:
Interest, net of capitalized interest	$	9,043	$	16,915
Income taxes	(1,388)		(204)
Non-cash investing and financing activities:
Change in accounts payable related to capital expenditures	$	15,393	$	70,026
Change in asset retirement obligations, with a corresponding change to crude oil and natural gas properties, net of disposals	206		42,126
Issuance of common stock for the acquisition of crude oil and natural gas properties, net	—		1,009,015
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	2,224	$	2,131
Operating cash flows from finance leases	20		57
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$	—	$	4,217
Finance leases	917		471