Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

Summary of Property and Equipment Including Oil and Natural Gas Properties

A summary of property and equipment including oil and natural gas properties is as follows (in thousands):

	March 31, 2020			December 31, 2019
Oil and natural gas properties:
Unproved	$	496,817		$	508,576
Proved		2,834,795			2,783,232
Gross oil and natural gas properties		3,331,612			3,291,808
Less accumulated depreciation, depletion and    amortization		(1,575,091	)		(1,532,127	)
Oil and natural gas properties, net		1,756,521			1,759,681
Other property and equipment		20,056			20,000
Less accumulated depreciation		(9,049	)		(8,774	)
Other property and equipment, net		11,007			11,226
Property and equipment, net	$	1,767,528		$	1,770,907

Summary of Revenue Disaggregated by Type

The following table illustrates the revenue disaggregated by type for the three months ended March 31, 2020 and 2019:

	Three Months Ended March 31,
	2020		2019
Revenues (in thousands)
Natural gas sales	$	79,090	$	81,825
NGL sales		18,549		21,248
Oil sales		26,232		28,755
Brokered natural gas and marketing revenue		9,488		9,530
Other revenue		66		139
Total revenues	$	133,425	$	141,497

Concentration Risk

The following table summarizes the Company’s concentration of receivables, net of allowances (if any), by product or service as of March 31, 2020 and December 31, 2019 (in thousands):

	March 31, 2020		December 31, 2019
Receivables by product or service:
Sale of oil and natural gas and related products    and services	$	42,375	$	63,730
Joint interest owners		13,559		12,156
Derivatives		2,667		210
Other		2,020		1,306
Total	$	60,621	$	77,402

Changes in Company's Asset Retirement Obligation Liability

The following table sets forth the changes in the Company’s ARO liability for the three months ended March 31, 2020 (in thousands):

	Three Months Ended March 31, 2020
Asset retirement obligations, beginning of period	$	31,841
Accretion		742
Obligation for wells drilled		41
Liabilities settled via plugging		(81	)
Less: current ARO portion		(2,162	)
Asset retirement obligations, end of period	$	30,381