Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income		$ 3,757
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,094	6,734
Amortization of debt issuance costs	251	251
Unrealized loss related to interest rate swaps		44
Fixed asset impairment charge	5,122	1,119
(Gain)loss on sale of assets	185	(1,724)
Equity-based incentive compensation	108	69
Changes in assets and liabilities:
Decrease in accounts receivable	4,201	4,480
Decrease in receivables from related parties	168	107
Decrease in other current assets	1,345	2,613
Decrease in other non-current assets	566	803
Increase (decrease) in accounts payable	104	(297)
Decrease in payables to related parties	(17)	(315)
Increase (decrease) in accrued interest payable	8	(171)
Decrease in accrued property taxes	(381)	(852)
Decrease in accrued payroll	(2,329)	(1,538)
Decrease in other accrued liabilities	(542)	(1,252)
Net cash provided by operating activities	7,874	19,517
Cash flows from investing activities:
Acquisition of DEVCO from Ergon (Note 8)	(12,221)
Capital expenditures	(2,900)	(2,801)
Proceeds from sale of assets	25	6,304
Net cash provided by (used in) investing activities	(15,096)	3,503
Cash flows from financing activities:
Payments on other financing activities	(638)	(597)
Borrowings under credit agreement	78,000	75,000
Payments under credit agreement	(62,000)	(88,000)
Proceeds from equity issuance	55	73
Distributions	(8,082)	(9,742)
Net cash provided by (used in) financing activities	7,335	(23,266)
Net increase (decrease) in cash and cash equivalents	113	(246)
Cash and cash equivalents at beginning of period	558	1,455
Cash and cash equivalents at end of period	671	1,209
Supplemental disclosure of non-cash financing and investing cash flow information:
Non-cash changes in property, plant and equipment	1,241	711
Increase in accrued liabilities related to insurance premium financing agreement	1,517	751
Third Party [Member]
Changes in assets and liabilities:
Increase (decrease) in accrued crude oil purchases	(3,466)	(6,373)
Increase (decrease) in unearned revenue	1,205	165
Related Party [Member]
Changes in assets and liabilities:
Increase (decrease) in accrued crude oil purchases	(4,463)	1,666
Increase (decrease) in unearned revenue	$ (285)	$ 10,231

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