Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2018

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

The March 31, 2017, accompanying condensed consolidated statements of operations (“accompanying statements of operations”) line items that were adjusted as a result of the adoption of ASU 2017-07 are summarized as follows:



	For the Three Months Ended March 31, 2017
	As Reported		As Adjusted
	(in thousands)
Operating expenses:
Exploration	$	11,978	$	11,817
General and administrative	$	29,224	$	28,817
Total operating expenses	$	207,145	$	206,577

Income from operations	$	165,593	$	166,161

Other non-operating income (expense), net	$	335	$	(233	)

The accompanying condensed consolidated statements of cash flows (“accompanying statements of cash flows”) line items that were adjusted as a result of the adoption of ASU 2016-15 and ASU 2016-18 for the three months ended March 31, 2017, are summarized as follows:



	For the Three Months Ended March 31, 2017
	As Reported			As Adjusted
	(in thousands)
Cash flows from operating activities:
Non-cash loss on extinguishment of debt, net	$	22		N/A
Loss on extinguishment of debt	N/A			$	35
Net cash provided by operating activities	$	134,966		$	134,979

Cash flows from investing activities:
Other, net	$	2,486		N/A
Net cash provided by investing activities	$	517,313		$	514,827

Cash flows from financing activities:
Cash paid for extinguishment of debt	N/A			$	(13	)
Net cash used in financing activities	$	(2,504	)	$	(2,517	)

Net change in cash and cash equivalents	$	649,775		N/A
Net change in cash, cash equivalents, and restricted cash	N/A			$	647,289
Cash and cash equivalents at beginning of period	$	9,372		N/A
Cash, cash equivalents, and restricted cash at beginning of period	N/A			$	12,372
Cash and cash equivalents at end of period	$	659,147		N/A
Cash, cash equivalents, and restricted cash at end of period	N/A			$	659,661

Schedule of cash and cash equivalents, and restricted cash

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the accompanying balance sheets:



	As of March 31, 2018		As of December 31, 2017
	(in thousands)
Cash and cash equivalents	$	643,337	$	313,943
Restricted cash	—		—
Total cash, cash equivalents, and restricted cash	$	643,337	$	313,943