Reportable Segments (Tables)

3 Months Ended

Mar. 31, 2016

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


	Three Months Ended March 31, 2016
	Exploration & Production		Midstream		Total
Operating revenues
Natural gas sales	$	3,675	$	—	$	3,675
Oil sales		5,343		—		5,343
Natural gas liquids sales		276		—		276
Gathering and transportation sales		—		13,875		13,875
Total operating revenues		9,294		13,875		23,169

Operating expenses:
Lease operating expenses		4,875		98		4,973
Transportation operating expenses		—		3,054		3,054
Cost of sales		130		—		130
Production taxes		221		—		221
General and administrative		4,434		1,285		5,719
Unit compensation expense		438		—		438
Depreciation, depletion and amortization		2,114		5,074		7,188
Asset impairments		1,309		—		1,309
Accretion expense		254		61		315
Total operating expenses		13,775		9,572		23,347

Operating income (loss)	$	(4,481)	$	4,303	$	(178)


	Three Months Ended March 31, 2015
	Exploration & Production		Midstream		Total
Operating revenues
Natural gas sales	$	6,574	$	—	$	6,574
Oil sales		4,964		—		4,964
Natural gas liquids sales		386		—		386
Gathering and transportation sales		—		—		—
Total operating revenues		11,924		—		11,924

Operating expenses:
Lease operating expenses		4,900		—		4,900
Cost of sales		205		—		205
Production taxes		370		—		370
General and administrative		7,555		—		7,555
Unit compensation expense		1,992		—		1,992
Loss on sale of assets		(59)		—		(59)
Depreciation, depletion and amortization		3,120		—		3,120
Asset impairments		82,865		—		82,865
Accretion expense		253		—		253
Total operating expenses		101,201		—		101,201

Operating loss	$	(89,277)	$	—	$	(89,277)

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