UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL - USD ($) $ in Thousands	Total	Adjustment	Noncontrolling interest	Noncontrolling interest Adjustment	Limited partners, Series A Preferred Units	Limited partners, Series A Preferred Units Adjustment	Common	Common Adjustment	General Partner	General Partner Adjustment
January 1, 2018 impact of Topic 606 day 1 adoption	$ 4,214		$ 0		$ 0		$ 4,130		$ 84
Beginning balance at Dec. 31, 2017	1,389,669	$ 1,393,883	10,813	$ 10,813	294,426	$ 294,426	1,056,510	$ 1,060,640	27,920	$ 28,004
Net income (loss)	(3,845)		85		7,125		(13,113)		2,058
Distributions to unitholders	(45,053)		0		0		(42,024)		(3,029)
Unit-based compensation	1,979		0		0		1,979		0
Tax withholdings on vested SMLP LTIP awards	(1,943)		0		0		(1,943)		0
Other	(940)		0		(810)		(130)		0
Ending balance at Mar. 31, 2018	1,344,081		$ 10,898		300,741		1,005,409		27,033
Beginning balance at Dec. 31, 2018	1,221,224				293,616		902,358		25,250
Net income (loss)	(36,914)				7,125		(44,051)		12
Conversion of General Partner economic interests	0				0		22,222		(22,222)
Distributions to unitholders	(45,281)				0		(42,241)		(3,040)
Unit-based compensation	2,526				0		2,526		0
Tax withholdings on vested SMLP LTIP awards	(2,522)				0		(2,522)		0
Ending balance at Mar. 31, 2019	$ 1,139,033				$ 300,741		$ 838,292		$ 0