Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues
Gathering and transportation lease revenues	$ 15,969	$ 13,168	$ 32,226	$ 25,486
Total revenues	21,855	17,039	39,345	35,575
Operating expenses:
Lease operating expenses	2,065	2,007	3,780	3,978
Transportation operating expenses	3,048	3,071	5,724	5,918
Production taxes	141	287	324	609
General and administrative expenses	4,171	6,919	8,920	12,084
Unit-based compensation expense	175	1,347	810	2,785
Gain on sale of assets		(2,388)		(2,388)
Depreciation, depletion and amortization	6,174	6,545	12,603	13,173
Asset impairments	0	0	0	0
Accretion expense	126	123	259	249
Total operating expenses	15,900	17,911	32,420	36,408
Other (income) expense
Interest expense, net	2,814	2,780	5,600	5,379
Earnings from equity investments	(791)	(3,111)	(2,233)	(7,383)
Other (income) expense	(21)	1,254	(67)	1,524
Total other (income) expenses	2,002	923	3,300	(480)
Total expenses	17,902	18,834	35,720	35,928
Income (loss) before income taxes	3,953	(1,795)	3,625	(353)
Income tax expense	76		122
Net income (loss)	3,877	(1,795)	3,503	(353)
Less:
Preferred unit paid-in-kind distributions	(10,605)	(3,500)	(10,605)	(3,500)
Preferred unit distributions		(7,000)	(8,838)	(15,750)
Preferred unit amortization	(745)	(568)	(1,442)	(1,099)
Net loss attributable to common unitholders	$ (7,473)	$ (12,863)	$ (17,382)	$ (20,702)
Net loss per unit
Common units - Basic and Diluted (in dollars per share)	$ (0.42)	$ (0.85)	$ (1.02)	$ (1.38)
Weighted Average Units Outstanding, Common Units - Basic and Diluted (in units)	17,684,563	15,199,779	16,968,736	14,997,058
Common units
Other (income) expense
Net income (loss)	$ 3,877	$ (1,795)
Natural gas sales
Revenues
Revenues	256	226	$ 366	$ 699
Oil sales
Revenues
Revenues	3,811	1,584	3,072	5,046
Natural gas liquid product
Revenues
Revenues	117	400	296	995
Gathering and transportation
Revenues
Revenues	$ 1,702	$ 1,661	$ 3,385	$ 3,349