Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues
Gathering and transportation lease revenues	$ 14,135	$ 13,148	$ 46,361	$ 38,634
Total revenues	20,916	18,152	60,261	53,727
Operating expenses:
Lease operating expenses	2,105	1,905	5,885	5,883
Transportation operating expenses	2,752	3,061	8,476	8,979
Production taxes	165	292	489	901
General and administrative expenses	4,317	5,109	13,237	17,193
Unit-based compensation expense	271	155	1,081	2,940
Gain on sale of assets		(238)		(2,626)
Depreciation, depletion and amortization	6,441	6,507	19,044	19,680
Accretion expense	132	123	391	372
Total operating expenses	16,183	16,914	48,603	53,322
Other (income) expense
Interest expense, net	12,141	2,786	17,741	8,165
Earnings from equity investments	(780)	(2,313)	(3,013)	(9,696)
Other (income) expense	(31)	352	(98)	1,876
Total other (income) expenses	11,330	825	14,630	345
Total expenses	27,513	17,739	63,233	53,667
Income (loss) before income taxes	(6,597)	413	(2,972)	60
Income tax expense	213		335
Net income (loss)	(6,810)	413	(3,307)	60
Preferred unit paid-in-kind distributions	(3,804)		(14,409)	(3,500)
Preferred unit distributions		(8,838)	(8,838)	(24,588)
Preferred unit amortization	(266)	(608)	(1,708)	(1,707)
Deemed distribution	103,773		103,773
Net income (loss) attributable to common unitholders - Basic	92,893	(9,033)	75,511	(29,735)
Mark-to-market on warrant	3,097		3,097
Net income (loss) attributable to common unitholders - Diluted	$ 95,990	$ (9,033)	$ 78,608	$ (29,735)
Net income (loss) per unit
Common units - Basic	$ 4.99	$ (0.59)	$ 4.31	$ (1.97)
Common units - Diluted	$ 4.54	$ (0.59)	$ 4.13	$ (1.97)
Common units - Basic	18,617,385	15,398,453	17,500,886	15,114,671
Common units - Diluted	21,141,065	15,398,453	19,011,877	15,114,671
Common units
Other (income) expense
Net income (loss)	$ (6,810)	$ 413
Natural gas sales
Revenues
Revenues	177	166	$ 543	$ 865
Oil sales
Revenues
Revenues	4,769	2,848	7,841	7,894
Natural gas liquid product
Revenues
Revenues	115	408	411	1,403
Gathering and transportation
Revenues
Revenues	$ 1,720	$ 1,582	$ 5,105	$ 4,931