Reporting Segments (Tables)

12 Months Ended

Dec. 31, 2016

The following tables set forth our segment information for the periods indicated (in thousands):


	For the Year Ended December 31, 2016
	Production		Midstream		Total
Operating revenues
Natural gas sales	$	10,408	$	—	$	10,408
Oil sales		5,138		—		5,138
Natural gas liquids sales		1,167		—		1,167
Gathering and transportation sales		—		53,972		53,972
Total operating revenues		16,713		53,972		70,685

Operating expenses:
Lease operating expenses		14,327		654		14,981
Transportation operating expenses		—		12,478		12,478
Cost of sales		328		—		328
Production taxes		1,167		—		1,167
General and administrative		17,178		5,723		22,901
Unit compensation expense		1,941		—		1,941
Loss on sale of assets		219		—		219
Depreciation, depletion and amortization		6,722		27,077		33,799
Asset impairments		7,646		—		7,646
Accretion expense		875		252		1,127
Total operating expenses		50,403		46,184		96,587

Operating income (loss)	$	(33,690)	$	7,788	$	(25,902)


	For the Year Ended December 31, 2015
	Production		Midstream		Total
Operating revenues
Natural gas sales	$	19,809	$	—	$	19,809
Oil sales		35,297		—		35,297
Natural gas liquids sales		1,597		—		1,597
Gathering and transportation sales		—		11,725		11,725
Total operating revenues		56,703		11,725		68,428

Operating expenses:
Lease operating expenses		19,890		98		19,988
Transportation operating expenses		—		2,176		2,176
Cost of sales		595		—		595
Production taxes		1,792		—		1,792
General and administrative		23,655		—		23,655
Unit-based compensation expense		2,454		—		2,454
Exploration costs		1,866		—		1,866
Loss on sale of assets		(111)		—		(111)
Depreciation, depletion and amortization		10,330		4,206		14,536
Asset impairments		123,860		—		123,860
Accretion expense		1,048		51		1,099
Total operating expenses		185,379		6,531		191,910

Operating income (loss)	$	(128,676)	$	5,194	$	(123,482)

The following table summarizes the total assets by operating segment as of December 31, 2016 and 2015 (in thousands):