Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net income (loss)	$ (3,307)	$ 60
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Depreciation, depletion and amortization	8,949	9,585
Amortization of debt issuance costs	872	498
Accretion of Class C discount	5,050
Class C distribution accrual	7,575
Accretion expense	391	372
Distributions from equity investments	12,368	18,572
Equity earnings in affiliate	(3,013)	(9,696)
Gain on sale of assets		(2,626)
Mark-to-market on warrant	(3,097)
Net loss on commodity derivative contracts	2,272	8,083
Net cash settlements received (paid) on commodity derivative contracts	813	(1,306)
Unit-based compensation	1,081	2,940
(Gain) loss on earnout derivative	(94)	1,876
Amortization of intangible assets	10,095	10,095
Changes in Operating Assets and Liabilities:
Accounts receivable	(23)	196
Accounts receivable - related entities	(354)	6,364
Prepaid expenses	(456)	1,669
Other assets	62	62
Accounts payable and accrued liabilities	6,034	10,307
Accounts payable and accrued liabilities- related entities	(925)	(4,932)
Other long-term liabilities	53	(1)
Net cash provided by operating activities	44,346	52,118
Cash flows from investing activities:
Development of oil and natural gas properties	(131)	(169)
Proceeds from sale of assets		6,209
Construction of gathering and transportation assets	(955)	(1,959)
Purchases of and contributions to equity affiliates	(242)	(2,838)
Net cash used in investing activities	(1,328)	1,243
Cash flows from financing activities:
Payments for offering costs		(50)
Proceeds from issuance of debt		2,000
Repayment of debt	(18,000)	(7,000)
Distributions to common unitholders	(5,216)	(20,815)
Class B preferred unit cash distributions	(17,675)	(24,500)
Units tendered by SOG employees for tax withholdings	(218)
Debt issuance costs	(209)	(1,006)
Net cash used in financing activities	(41,318)	(51,371)
Net increase (decrease) in cash and cash equivalents	1,700	1,990
Cash and cash equivalents, beginning of period	2,934	321
Cash and cash equivalents, end of period	4,634	2,311
Supplemental disclosures of cash flow information:
Change in accrued capital expenditures	467	450
Cash paid during the period for income taxes	129
Cash paid during the period for interest	$ 7,404	$ 7,316