Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net income (loss)	$ 3,503	$ (353)
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Depreciation, depletion and amortization	5,873	6,443
Amortization of debt issuance costs	578	265
Accretion expense	259	249
Distributions from equity investments	8,164	13,101
Equity earnings in affiliate	(2,233)	(7,383)
Gain on sale of assets		(2,388)
Net loss on commodity derivative contracts	3,524	5,653
Net cash settlements received (paid) on commodity derivative contracts	469	(706)
Unit-based compensation	810	2,785
(Gain) loss on earnout derivative	(63)	1,524
Amortization of intangible assets	6,730	6,730
Changes in Operating Assets and Liabilities:
Accounts receivable	23	185
Accounts receivable - related entities	176	6,541
Prepaid expenses	(501)	83
Other assets	42	43
Accounts payable and accrued liabilities	2,585	7,687
Accounts payable and accrued liabilities- related entities	176	(3,376)
Other long-term liabilities	22	(1)
Net cash provided by operating activities	30,137	37,082
Cash flows from investing activities:
Development of oil and natural gas properties	(103)	(205)
Proceeds from sale of assets		5,896
Construction of gathering and transportation assets	(357)	(1,700)
Purchases of and contributions to equity affiliates	(242)	(2,713)
Net cash used in investing activities	(702)	1,278
Cash flows from financing activities:
Payments for offering costs		(50)
Repayment of debt	(8,000)	(5,000)
Distributions to common unitholders	(5,216)	(13,614)
Class B preferred unit cash distributions	(17,675)	(17,500)
Units tendered by SOG employees for tax withholdings	(218)
Debt issuance costs	(7)	(33)
Net cash used in financing activities	(31,116)	(36,197)
Net increase (decrease) in cash and cash equivalents	(1,681)	2,163
Cash and cash equivalents, beginning of period	2,934	321
Cash and cash equivalents, end of period	1,253	2,484
Supplemental disclosures of cash flow information:
Change in accrued capital expenditures	82	341
Cash paid during the period for interest	$ 5,070	$ 4,788