CONSOLIDATED AND CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income (loss)	$ 8,815	$ (3,656)
Less: (Income) from discontinued operations, net of income taxes	0	(1,102)
Net income (loss) from continuing operations	8,815	(4,758)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	15,239	14,901
Amortization and write-off of deferred debt issuance costs	492	895
Amortization of premium on notes payable	(77)	(77)
Deferred income tax expense	286	369
Loss on sale of property, plant and equipment, net	190	720
Gain on retirement of senior unsecured notes	(3,484)	0
Derivative (income) loss	(33)	239
Net cash paid for commodity derivatives	(636)	(385)
Unit-based compensation	346	352
Change in current assets and liabilities, excluding effects of acquisitions and dispositions:
Accounts and other receivables	26,413	13,451
Product exchange receivables	0	(15)
Inventories	15,710	15,235
Due from affiliates	2,729	(7,384)
Other current assets	(1,413)	(102)
Trade and other accounts payable	(10,440)	10,881
Product exchange payables	450	1,930
Due to affiliates	(166)	1,154
Income taxes payable	133	544
Other accrued liabilities	(9,118)	(11,177)
Change in other non-current assets and liabilities	(547)	(1,351)
Net cash provided by continuing operating activities	44,889	35,422
Net cash provided by discontinued operating activities	0	5,181
Net cash provided by operating activities	44,889	40,603
Cash flows from investing activities:
Payments for property, plant and equipment	(12,260)	(6,637)
Acquisitions	0	(23,720)
Payments for plant turnaround costs	(150)	(3,827)
Proceeds from involuntary conversion of property, plant and equipment	1,768	0
Proceeds from sale of property, plant and equipment	4,347	574
Net cash used in continuing investing activities	(6,295)	(33,610)
Net cash used in discontinued investing activities	0	(336)
Net cash used in investing activities	(6,295)	(33,946)
Cash flows from financing activities:
Payments of long-term debt and finance lease obligations	(114,724)	(89,255)
Proceeds from long-term debt	76,000	205,000
Purchase of treasury units	(9)	(392)
Payment of debt issuance costs	(192)	(77)
Excess purchase price over carrying value of acquired assets	0	(102,393)
Cash distributions paid	(2,457)	(19,613)
Net cash used in financing activities	(41,382)	(6,730)
Net decrease in cash	(2,788)	(73)
Cash at beginning of period	2,856	300
Cash at end of period	68	227
Non-cash additions to property, plant and equipment	$ 2,142	$ 2,001