Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues
Gathering and transportation lease revenues	$ 13,168		$ 25,486
Total revenues	17,039	$ 25,029	35,575	$ 50,836
Operating expenses:
Lease operating expenses	2,007	3,881	3,978	8,864
Transportation operating expenses	3,071	3,032	5,918	6,328
Cost of sales		40		77
Production taxes	287	353	609	826
General and administrative expenses	6,919	6,353	12,084	11,962
Unit-based compensation expense	1,347	780	2,785	1,320
Gain on sale of assets	(2,388)		(2,388)
Depreciation, depletion and amortization	6,545	8,937	13,173	21,118
Asset impairments				4,688
Accretion expense	123	240	249	498
Total operating expenses	17,911	23,616	36,408	55,681
Other (income) expense
Interest expense, net	2,780	1,896	5,379	3,779
Earnings from equity investments	(3,111)	(1,042)	(7,383)	(1,524)
Other expense	1,254		1,524
Total other (income) expenses	923	854	(480)	2,255
Total expenses	18,834	24,470	35,928	57,936
Income (loss) before income taxes	(1,795)	559	(353)	(7,100)
Net income (loss)	(1,795)	559	(353)	(7,100)
Less:
Preferred unit paid-in-kind distributions	(3,500)		(3,500)	(2,625)
Preferred unit distributions	(7,000)	(8,750)	(15,750)	(15,750)
Preferred unit amortization	(568)	(433)	(1,099)	(837)
Net loss attributable to common unitholders	$ (12,863)	$ (8,624)	$ (20,702)	$ (26,312)
Net loss per unit
Common units - Basic and Diluted (in dollars per share)	$ (0.85)	$ (0.62)	$ (1.38)	$ (1.92)
Weighted Average Units Outstanding, Common Units - Basic and Diluted (in units)	15,199,779	13,939,993	14,997,058	13,671,557
Common units
Other (income) expense
Net income (loss)			$ (353)
Natural gas
Revenues
Revenue from contracts with customers	$ 226	$ 2,252	699	$ 5,031
Oil
Revenues
Revenue from contracts with customers	1,584	8,109	5,046	19,459
Natural gas liquid
Revenues
Revenue from contracts with customers	400	492	995	959
Gathering and transportation
Revenues
Revenue from contracts with customers	$ 1,661	$ 14,176	$ 3,349	$ 25,387